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50 Java Projects with Source Code for All Skill Levels

By Faraz - July 20, 2024

50 Java projects with complete source code, suitable for beginners to experts. Dive into practical coding with these hands-on examples.

Java , being one of the most popular programming languages globally, offers a vast array of opportunities for enthusiasts to practice and enhance their coding skills. Engaging in practical projects is one of the most effective ways to master Java programming. Here, we'll explore 50 Java projects with source code across different levels of complexity, suitable for beginners, intermediates, and advanced learners.

Table of Contents

Introduction to Java Projects

Java projects provide hands-on experience and are instrumental in reinforcing theoretical concepts. They offer a practical understanding of Java's syntax , structure, and functionality. Moreover, working on projects enables developers to tackle real-world problems, fostering creativity and problem-solving skills.

1. Calculator

Houari ZEGAI's Calculator project offers a great opportunity for beginners to delve into Java programming. This simple yet effective project helps learners understand fundamental concepts like variables, operators, and basic user input/output. With clear, commented code, ZEGAI's Calculator is a fantastic starting point for those new to Java development . By studying and tinkering with this project, beginners can grasp core principles while gaining confidence in their coding abilities.

2. Guess the Number Game

The "Guess the Number" game is a classic Java project suitable for programmers of all skill levels. This interactive game challenges players to guess a randomly generated number within a specified range. With simple yet engaging gameplay, the "Guess the Number" project provides an excellent opportunity for beginners to practice essential Java concepts while having fun.

3. Currency Converter

The Currency Converter project is a practical and useful Java application that allows users to convert between different currencies. This project is suitable for programmers at various skill levels, providing an opportunity to apply Java programming concepts in a real-world scenario.

In the Currency Converter project, users input an amount in one currency and select the currency they wish to convert it to. The application then retrieves the latest exchange rates from a reliable source, such as an API, and performs the conversion calculation. By implementing this functionality, learners can gain valuable experience working with APIs, handling user input, and performing mathematical operations in Java.

4. Digital Clock

The Digital Clock project is a straightforward yet engaging Java application that displays the current time in a digital format. This project is suitable for beginners and intermediate programmers alike, offering an opportunity to practice essential Java concepts while creating a useful utility.

In the Digital Clock project, programmers utilize Java's date and time functionality to retrieve the current system time and display it on the screen. By incorporating graphical user interface (GUI) components such as labels and timers, learners can create an interactive clock display that updates in real-time. This hands-on approach allows beginners to familiarize themselves with GUI programming concepts while practicing core Java skills.

5. ToDo App

The ToDo App project is a practical Java application that helps users organize their tasks and manage their daily activities efficiently. This project is suitable for programmers looking to develop their Java skills while creating a useful productivity tool.

In the ToDo App project, users can add tasks to a list, mark them as completed, and remove them as needed. By implementing features such as user input handling, task manipulation, and list management, learners gain valuable experience in Java programming fundamentals. Additionally, this project provides an opportunity to explore concepts like data structures, file handling, and user interface design.

6. QRCodeFX

QRCodeFX is an exciting Java project that allows programmers to generate QR codes dynamically. This project leverages JavaFX, a powerful library for building graphical user interfaces, to create an interactive application for generating and displaying QR codes.

7. Weather Forecast App

The Weather Forecast App project is an exciting Java application that provides users with up-to-date weather information for their location and other selected areas. This project combines Java programming with APIs to create a dynamic and user-friendly weather forecasting tool.

In the Weather Forecast App, users can input their location or select a specific city to view current weather conditions, including temperature, humidity, wind speed, and more. By integrating with a weather API, such as OpenWeatherMap, programmers can retrieve real-time weather data and display it in a clear and visually appealing format.

8. Temperature Converter Tool

The Temperature Converter Tool is a handy Java application that allows users to convert temperatures between different units, such as Celsius, Fahrenheit, and Kelvin. This project provides a practical opportunity for programmers to develop their Java skills while creating a useful utility for everyday use.

In the Temperature Converter Tool, users can input a temperature value along with the unit of measurement (e.g., Celsius, Fahrenheit, or Kelvin) and select the desired output unit. The application then performs the conversion calculation and displays the result, allowing users to quickly and easily convert temperatures with precision.

9. Word Counter Tool

The Word Counter Tool is a versatile Java application designed to analyze text and provide valuable insights into word frequency and usage. This project offers programmers a practical opportunity to hone their Java skills while creating a useful utility for text analysis.

In the Word Counter Tool, users can input a block of text or upload a text file, and the application will analyze the content to determine the frequency of each word. By utilizing Java's string manipulation capabilities and data structures such as maps or arrays, programmers can efficiently process the text and generate a comprehensive word count report.

10. Scientific Calculator

The Scientific Calculator project is an advanced Java application that provides users with a wide range of mathematical functions and operations beyond basic arithmetic. This project is ideal for programmers looking to expand their Java skills while creating a powerful utility for scientific calculations.

In the Scientific Calculator, users can input mathematical expressions, including functions such as trigonometric, logarithmic, and exponential functions, and the application will evaluate and display the result accurately. By leveraging Java's math libraries and implementing parsing algorithms, programmers can create a robust calculator capable of handling complex mathematical computations with precision.

11. Tic Tac Toe

The Tic Tac Toe project is a classic Java game that provides users with an opportunity to engage in a fun and strategic multiplayer experience. This project is perfect for programmers looking to apply their Java skills while creating an interactive game with simple rules and dynamic gameplay.

In the Tic Tac Toe game, two players take turns marking spaces on a 3x3 grid with their respective symbols (typically X and O), aiming to form a horizontal, vertical, or diagonal line of their symbols before their opponent. By implementing logic to handle user input, validate moves, and check for win conditions, programmers can create a fully functional and enjoyable game experience.

12. Drag and Drop Application

The Drag and Drop Application is a dynamic Java project that enables users to interact with graphical elements by dragging and dropping them across the application's interface. This project provides programmers with an opportunity to explore Java's graphical user interface (GUI) capabilities while creating an intuitive and interactive user experience.

13. Snake Game

The Snake Game project is a classic Java game that provides users with an entertaining and addictive gaming experience. This project offers programmers an opportunity to apply their Java skills while creating a dynamic and interactive game with simple yet challenging gameplay mechanics.

In the Snake Game, players control a snake that moves around a grid, consuming food items to grow longer while avoiding collisions with the walls of the grid or the snake's own body. By implementing logic to handle player input, update the snake's position, and detect collisions, programmers can create a compelling and immersive gaming experience.

14. Resume Builder

The Resume Builder project is a practical Java application designed to assist users in creating professional resumes efficiently. This project offers programmers an opportunity to apply their Java skills while developing a useful tool for individuals seeking to showcase their qualifications and experiences effectively.

15. Student Management System

The Student Management System project is a comprehensive Java application designed to streamline administrative tasks related to student information and academic records. This project offers programmers an opportunity to apply their Java skills while developing a robust and efficient system for managing student data.

In the Student Management System, administrators can perform various tasks such as adding new students, updating existing records, managing course enrollments, and generating reports. By implementing features such as database integration, user authentication, and data validation, programmers can create a reliable and user-friendly platform for organizing and accessing student information.

16. Rock Paper Scissors

The Rock Paper Scissors project is a classic Java game that provides users with a simple yet entertaining gaming experience. This project offers programmers an opportunity to practice their Java skills while creating a fun and interactive game of chance.

In the Rock Paper Scissors game, players compete against the computer by selecting one of three options: rock, paper, or scissors. The winner is determined based on the rules of the game: rock beats scissors, scissors beats paper, and paper beats rock. By implementing logic to handle player input, generate random computer choices, and determine the outcome of each round, programmers can create an engaging gaming experience.

17. Hangman Game

The Hangman Game project is a classic Java game that provides users with a challenging and engaging word-guessing experience. This project offers programmers an opportunity to practice their Java skills while creating a fun and interactive game of wit and strategy.

In the Hangman Game, players attempt to guess a secret word by suggesting letters one at a time. For each incorrect guess, a part of a hangman figure is drawn. The game continues until the player correctly guesses the word or the hangman figure is completed. By implementing logic to handle player input, manage the game state, and select random words, programmers can create an immersive gaming experience.

The Webcam Application project is a Java application designed to interface with a webcam device and capture video or images. This project offers programmers an opportunity to apply their Java skills while creating a versatile tool for webcam usage.

19. Attendance Management System

The Attendance Management System project is a comprehensive Java application designed to streamline attendance tracking and management processes in educational institutions or workplaces. This project offers programmers an opportunity to apply their Java skills while developing a robust and efficient system for managing attendance records.

In the Attendance Management System, administrators can perform various tasks such as recording attendance, generating attendance reports, managing leave requests, and tracking attendance trends over time. By implementing features such as user authentication, data encryption, and access control, programmers can create a secure and reliable platform for monitoring attendance data.

20. Chess Game

The Chess Game project is a Java application that offers users a classic and strategic gaming experience. This project provides programmers with an opportunity to apply their Java skills while creating a sophisticated and engaging game of chess.

In the Chess Game, players take turns moving their pieces across an 8x8 grid, aiming to capture their opponent's pieces and ultimately checkmate their opponent's king. By implementing logic to handle player input, validate moves, and simulate game states, programmers can create a challenging and immersive gaming experience.

21. Vehicle Rental Management System

The Vehicle Rental Management System is a comprehensive Java application designed to streamline the process of managing vehicle rentals for rental agencies or businesses. This project offers programmers an opportunity to apply their Java skills while developing a robust and efficient system for handling rental operations.

In the Vehicle Rental Management System, administrators can perform various tasks such as adding new vehicles to the inventory, managing rental reservations, tracking rental durations and payments, and generating reports. By implementing features such as database integration, user authentication, and data validation, programmers can create a reliable and user-friendly platform for managing vehicle rentals.

22. Quiz App

The Quiz App project is a Java application designed to provide users with an interactive and educational quiz experience. This project offers programmers an opportunity to apply their Java skills while creating a dynamic and engaging platform for quiz-taking.

In the Quiz App, users can choose from a variety of quiz topics or categories, such as science, history, literature, or general knowledge. The application presents users with multiple-choice questions related to the selected topic and provides instant feedback on their answers. By implementing logic to handle user input, track scores, and display quiz results, programmers can create an immersive and rewarding quiz experience.

23. Voting Management System

The Voting Management System is a sophisticated Java application designed to facilitate the management of voting processes in elections or organizational decision-making. This project offers programmers an opportunity to apply their Java skills while developing a secure and efficient system for managing voting operations.

In the Voting Management System, administrators can oversee various aspects of the voting process, including voter registration, ballot creation, voter authentication, vote counting, and result reporting. By implementing features such as user authentication, encryption algorithms, and audit trails, programmers can create a robust and tamper-resistant platform for conducting fair and transparent elections.

24. Electricity Billing System

The Electricity Billing System is a Java application designed to automate and streamline the process of managing electricity bills for customers. This project offers programmers an opportunity to apply their Java skills while developing an efficient and user-friendly system for billing and invoicing.

In the Electricity Billing System, administrators can perform various tasks such as adding new customers, recording meter readings, calculating electricity consumption, generating bills, and processing payments. By implementing features such as database integration, billing algorithms, and user interfaces, programmers can create a reliable and accurate platform for managing electricity billing operations.

25. Online Shopping Cart (E-Commerce Website)

The Online Shopping Cart project is a comprehensive Java application designed to provide users with a seamless and convenient online shopping experience. This project offers programmers an opportunity to apply their Java skills while developing a feature-rich and user-friendly e-commerce platform.

In the Online Shopping Cart, users can browse through a catalog of products, add items to their cart, and proceed to checkout to complete their purchase. By implementing features such as user authentication, product search functionality, shopping cart management, and secure payment processing, programmers can create a robust and reliable platform for online shopping.

26. Online BookStore

The Online Bookstore project is a dynamic Java application that provides users with a convenient platform to browse, search, and purchase books online. This project offers programmers an opportunity to apply their Java skills while developing a comprehensive and user-friendly e-commerce platform specifically tailored for books.

In the Online Bookstore, users can explore a vast catalog of books across different genres, authors, and topics. They can easily search for specific titles, view book details, read reviews, and add books to their shopping cart for purchase. By implementing features such as user authentication, secure payment processing, and order management, programmers can create a seamless and enjoyable shopping experience for book enthusiasts.

27. Connect4

The Connect4 Game project is a Java application that offers users a classic and engaging gaming experience. This project provides programmers with an opportunity to apply their Java skills while developing a strategic and entertaining game of Connect 4.

In the Connect4 Game, two players take turns dropping colored discs into a vertical grid with the goal of connecting four discs of their color horizontally, vertically, or diagonally. By implementing logic to handle player input, validate moves, and detect winning conditions, programmers can create an immersive and challenging gaming experience.

28. Event Management System

The Event Management System is a comprehensive Java application designed to streamline the planning and organization of events for various purposes, such as conferences, weddings, or corporate gatherings. This project offers programmers an opportunity to apply their Java skills while developing a versatile and efficient system for managing event logistics.

In the Event Management System, administrators can perform various tasks such as creating event schedules, managing guest lists, coordinating vendors and suppliers, and tracking expenses and budgets. By implementing features such as user authentication, calendar integration, and communication tools, programmers can create a centralized platform for planning and executing events seamlessly.

29. Puzzle Game

The Puzzle Game project is an engaging Java application that challenges users with a variety of mind-bending puzzles to solve. This project provides programmers with an opportunity to apply their Java skills while creating an entertaining and intellectually stimulating gaming experience.

In the Puzzle Game, players are presented with a series of puzzles, each requiring a unique solution or strategy to complete. These puzzles may include logic puzzles, pattern recognition challenges, maze navigation tasks, or spatial reasoning exercises. By implementing logic to generate puzzles, validate player inputs, and track progress, programmers can create a dynamic and immersive gaming experience.

30. Pacman Game

The Pacman Game project is a classic Java application that brings to life the iconic arcade game experience. This project offers programmers an opportunity to apply their Java skills while recreating the nostalgic and beloved gameplay of Pacman.

In the Pacman Game, players control the iconic character Pacman as they navigate through a maze, eating pellets and avoiding ghosts. The objective is to clear the maze of all pellets while avoiding contact with the ghosts, which will result in losing a life. By implementing logic to handle player input, control Pacman's movement, and manage ghost behavior, programmers can recreate the thrilling and addictive gameplay of Pacman.

31. Space Invaders Game

The Space Invaders Game project is a thrilling Java application that immerses players in an epic battle against invading alien forces. This project provides programmers with an opportunity to apply their Java skills while recreating the classic arcade gaming experience of Space Invaders.

In the Space Invaders Game, players control a spaceship at the bottom of the screen, tasked with defending Earth from waves of descending alien invaders. The player can move the spaceship horizontally to dodge enemy fire and shoot projectiles to eliminate the invading aliens. By implementing logic to handle player input, manage alien movement patterns, and detect collisions, programmers can recreate the fast-paced and addictive gameplay of Space Invaders.

32. Breakout Game

The Breakout Game project is an exhilarating Java application that challenges players to smash through rows of bricks using a bouncing ball and a paddle. This project offers programmers an opportunity to apply their Java skills while recreating the timeless and addictive gameplay of Breakout.

In the Breakout Game, players control a paddle at the bottom of the screen, tasked with bouncing a ball to break through a wall of bricks at the top. The player must maneuver the paddle to keep the ball in play and prevent it from falling off the bottom of the screen. By implementing logic to handle player input, simulate ball movement and collision detection, and manage brick destruction, programmers can recreate the fast-paced and exciting gameplay of Breakout.

33. Tetris Game

The Tetris Game project is an exciting Java application that challenges players to manipulate falling tetrominoes to create complete lines and clear the playing field. This project provides programmers with an opportunity to apply their Java skills while recreating the iconic and addictive gameplay of Tetris.

In the Tetris Game, players control the descent of tetrominoes—geometric shapes composed of four square blocks— as they fall from the top of the screen to the bottom. The player can rotate and maneuver the tetrominoes to fit them into gaps and create solid lines across the playing field. By implementing logic to handle player input, simulate tetromino movement and rotation, and detect line completions, programmers can recreate the fast-paced and challenging gameplay of Tetris.

34. Minesweeper Game

The Minesweeper Game project is a captivating Java application that challenges players to uncover hidden mines on a grid-based playing field while avoiding detonating any of them. This project provides programmers with an opportunity to apply their Java skills while recreating the engaging and strategic gameplay of Minesweeper.

In the Minesweeper Game, players are presented with a grid of squares, some of which conceal hidden mines. The objective is to uncover all the non-mine squares without triggering any mines. Players can reveal the contents of a square by clicking on it, and clues provided by adjacent squares indicate the number of mines in proximity. By implementing logic to handle player input, reveal squares, and detect game-ending conditions, programmers can recreate the challenging and thought-provoking gameplay of Minesweeper.

ChatFx is a Java-based chat application that provides users with a platform to engage in real-time text-based conversations. This project offers programmers an opportunity to apply their Java skills while developing a dynamic and interactive chat system.

36. Chrome Dino Game

The Chrome Dino Game Clone project is a Java application inspired by the classic side-scrolling endless runner game found in Google Chrome's offline page. This project offers programmers an opportunity to apply their Java skills while recreating the simple yet addictive gameplay of the Chrome Dino Game.

In the Chrome Dino Game Clone, players control a dinosaur character that automatically runs forward on a desert landscape. The objective is to jump over obstacles such as cacti and birds while avoiding collisions. By implementing logic to handle player input for jumping, detect collisions with obstacles, and generate random obstacle patterns, programmers can recreate the fast-paced and challenging gameplay of the Chrome Dino Game.

37. Web Scraping

Web scraping refers to the process of extracting data from websites. It's a valuable technique for gathering information from the web for various purposes, such as data analysis, market research, or content aggregation. In Java, developers can leverage libraries like Jsoup to perform web scraping efficiently and effectively.

Jsoup is a Java library that provides a convenient API for working with HTML documents. With Jsoup, developers can easily parse HTML, navigate the document structure, and extract relevant data using CSS selectors or DOM traversal methods.

38. Text Editor

A Text Editor is a fundamental tool used for creating, editing, and managing text-based documents. Building a Text Editor application in Java provides an excellent opportunity for programmers to apply their skills while creating a versatile and user-friendly tool for text manipulation.

In Java, developers can leverage libraries like JavaFX to create graphical user interfaces (GUIs) for their applications. JavaFX offers a rich set of features for building interactive and visually appealing desktop applications, making it well-suited for developing a Text Editor.

39. Tender Management System

A Tender Management System is a comprehensive software solution designed to streamline the process of tendering, from initial announcement to final contract award. This system facilitates the entire tender lifecycle, including tender creation, submission, evaluation, and contract management. Building a Tender Management System in Java presents an opportunity for developers to create a powerful tool that enhances efficiency and transparency in the tendering process.

40. Hotel Reservation System

A Hotel Reservation System is a software application designed to streamline the process of booking accommodations and managing reservations for hotels, resorts, or other lodging establishments. Building a Hotel Reservation System in Java provides developers with an opportunity to create a comprehensive solution that enhances the efficiency and customer experience of hotel management.

41. Train Ticket Reservation System

A Train Ticket Reservation System is a software application designed to facilitate the booking of train tickets and management of reservations for railway passengers. Building a Train Ticket Reservation System in Java provides developers with an opportunity to create a comprehensive solution that enhances the efficiency and convenience of train travel.

42. School Management System

A School Management System is a comprehensive software solution designed to streamline various administrative tasks within educational institutions. This system helps manage student information, class schedules, attendance records, grading, and communication between teachers, students, and parents. Building a School Management System in Java provides an efficient way to organize and automate processes, ultimately enhancing the effectiveness of school administration.

43. Banking System

A Banking System is a software application used by financial institutions to manage customer accounts, transactions, and other banking operations. This system facilitates activities such as account management, fund transfers, loan processing, and online banking services. Building a Banking System in Java involves implementing secure and efficient algorithms for managing financial transactions, ensuring data integrity and confidentiality, and providing a seamless user experience for customers.

44. Restaurant Management System

A Restaurant Management System is a software platform used by restaurants and food service establishments to manage various aspects of their operations, including order management, inventory control, table reservations, and billing. This system helps streamline restaurant workflows, improve efficiency, and enhance the dining experience for customers. Building a Restaurant Management System in Java involves designing user-friendly interfaces, integrating with point-of-sale devices, and implementing features such as menu customization, order tracking, and kitchen management.

45. Library Management System

A Library Management System is a software application used by libraries to manage their collections, circulation, and patron services. This system helps librarians track books, manage borrower information, automate check-in and check-out processes, and generate reports on library usage. Building a Library Management System in Java involves designing a database schema to store book and patron information, implementing search and retrieval functionalities, and providing a user-friendly interface for library staff and patrons to interact with the system.

46. Mail Sender

A Mail Sender is a software application used to compose, send, and manage emails. This tool facilitates communication by allowing users to send messages to one or more recipients over email. Building a Mail Sender in Java involves integrating with email protocols such as SMTP (Simple Mail Transfer Protocol) or using third-party email APIs to handle email delivery and management.

47. 2048 Game

The 2048 Game is a popular single-player puzzle game where players slide numbered tiles on a grid to combine them and create a tile with the number 2048. Building a 2048 Game in Java involves implementing game mechanics such as tile movement, tile merging, scoring, and game over conditions. Developers can use graphical libraries like JavaFX or Swing to create a user interface for the game.

48. Table Generator

A Table Generator is a tool used to create tables or grids with specified dimensions and content. This tool is often used in document preparation, web development, or data analysis to generate structured data displays. Building a Table Generator in Java involves designing a user interface for users to input table parameters such as rows, columns, and content, and then generating the table output dynamically.

49. Health Care Management System

A Health Care Management System is a software application used by healthcare providers to manage patient records, appointments, medical history, and other administrative tasks. This system helps streamline healthcare workflows, improve patient care, and enhance operational efficiency. Building a Health Care Management System in Java involves integrating with healthcare standards such as HL7 (Health Level Seven) for data exchange and implementing features such as patient registration, appointment scheduling, and electronic health record (EHR) management.

50. Energy Saving System

An Energy Saving System is a software application used to monitor, analyze, and optimize energy usage in buildings, facilities, or industrial processes. This system helps identify energy inefficiencies, track energy consumption patterns, and implement strategies to reduce energy consumption and costs. Building an Energy Saving System in Java involves integrating with sensors, meters, and building management systems to collect energy data, performing data analysis to identify energy-saving opportunities, and implementing control algorithms to optimize energy usage in real-time.

Engaging in Java projects with source code is an invaluable aspect of learning and mastering the language. Whether you're a novice aiming to solidify your foundation or an experienced developer seeking to enhance your skills, embarking on practical projects offers a rewarding learning experience. By exploring projects across different levels of complexity, developers can broaden their understanding, tackle challenges, and unleash their creativity in the world of Java programming.

Q1. Where can I find Java projects with source code for beginners?

Beginners can find Java projects on platforms like GitHub, CodeProject, and tutorial websites catering specifically to novice programmers.

Q2. How do Java projects help in learning programming?

Java projects provide hands-on experience, reinforce theoretical concepts, and promote problem-solving skills crucial for mastering programming.

Q3. Are Java projects suitable for advanced developers?

Yes, advanced developers can benefit from Java projects by tackling complex problems, exploring new technologies, and contributing to open-source projects.

Q4. Can I modify existing Java projects to suit my requirements?

Absolutely! Modifying existing Java projects allows developers to customize functionality, experiment with different approaches, and enhance their coding skills.

Q5. Are there online communities for discussing Java projects and seeking help?

Yes, numerous online forums and programming communities exist where developers can share ideas, seek assistance, and collaborate on Java projects.

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Java Coding Practice

What kind of Java practice exercises are there?

How to solve these java coding challenges, why codegym is the best platform for your java code practice.

• Tons of versatile Java coding tasks for learners with any background: from Java Syntax and Core Java topics to Multithreading and Java Collections
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In Java programming, commands are essential instructions that tell the computer what to do. These commands are written in a specific way so the computer can understand and execute them. Every program in Java is a set of commands. At the beginning of your Java programming practice , it’s good to know a few basic principles:

• In Java, each command ends with a semicolon;
• A command can't exist on its own: it’s a part of a method, and method is part of a class;
• Method (procedure, function) is a sequence of commands. Methods define the behavior of an object.

Here is an example of the command:

The command System.out.println("Hello, World!"); tells the computer to display the text inside the quotation marks.

If you want to display a number and not text, then you do not need to put quotation marks. You can simply write the number. Or an arithmetic operation. For example:

Command to display the number 1.

A command in which two numbers are summed and their sum (10) is displayed.

As we discussed in the basic rules, a command cannot exist on its own in Java. It must be within a method, and a method must be within a class. Here is the simplest program that prints the string "Hello, World!".

We have a class called HelloWorld , a method called main() , and the command System.out.println("Hello, World!") . You may not understand everything in the code yet, but that's okay! You'll learn more about it later. The good news is that you can already write your first program with the knowledge you've gained.

Attention! You can add comments in your code. Comments in Java are lines of code that are ignored by the compiler, but you can mark with them your code to make it clear for you and other programmers.

Single-line comments start with two forward slashes (//) and end at the end of the line. In example above we have a comment //here we print the text out

You can read the theory on this topic here , here , and here . But try practicing first!

Explore the Java coding exercises for practicing with commands below. First, read the conditions, scroll down to the Solution box, and type your solution. Then, click Verify (above the Conditions box) to check the correctness of your program.

The two main types in Java are String and int. We store strings/text in String, and integers (whole numbers) in int. We have already used strings and integers in previous examples without explicit declaration, by specifying them directly in the System.out.println() operator.

In the first case “I am a string” is a String in the second case 5 is an integer of type int. However, most often, in order to manipulate data, variables must be declared before being used in the program. To do this, you need to specify the type of the variable and its name. You can also set a variable to a specific value, or you can do this later. Example:

Here we declared a variable called a but didn't give it any value, declared a variable b and gave it the value 5 , declared a string called s and gave it the value Hello, World!

Attention! In Java, the = sign is not an equals sign, but an assignment operator. That is, the variable (you can imagine it as an empty box) is assigned the value that is on the right (you can imagine that this value was put in the empty box).

We created an integer variable named a with the first command and assigned it the value 5 with the second command.

Before moving on to practice, let's look at an example program where we will declare variables and assign values to them:

In the program, we first declared an int variable named a but did not immediately assign it a value. Then we declared an int variable named b and "put" the value 5 in it. Then we declared a string named s and assigned it the value "Hello, World!" After that, we assigned the value 2 to the variable a that we declared earlier, and then we printed the variable a, the sum of the variables a and b, and the variable s to the screen

This program will display the following:

We already know how to print to the console, but how do we read from it? For this, we use the Scanner class. To use Scanner, we first need to create an instance of the class. We can do this with the following code:

Once we have created an instance of Scanner, we can use the next() method to read input from the console or nextInt() if we should read an integer.

The following code reads a number from the console and prints it to the console:

Here we first import a library scanner, then ask a user to enter a number. Later we created a scanner to read the user's input and print the input out.

This code will print the following output in case of user’s input is 5:

More information about the topic you could read here , here , and here .

See the exercises on Types and keyboard input to practice Java coding:

Conditions and If statements in Java allow your program to make decisions. For example, you can use them to check if a user has entered a valid password, or to determine whether a number is even or odd. For this purpose, there’s an 'if/else statement' in Java.

The syntax for an if statement is as follows:

Here could be one or more conditions in if and zero or one condition in else.

Here's a simple example:

In this example, we check if the variable "age" is greater than or equal to 18. If it is, we print "You are an adult." If not, we print "You are a minor."

Here are some Java practice exercises to understand Conditions and If statements:

In Java, a "boolean" is a data type that can have one of two values: true or false. Here's a simple example:

The output of this program is here:

In addition to representing true or false values, booleans in Java can be combined using logical operators. Here, we introduce the logical AND (&&) and logical OR (||) operators.

• && (AND) returns true if both operands are true. In our example, isBothFunAndEasy is true because Java is fun (isJavaFun is true) and coding is not easy (isCodingEasy is false).
• || (OR) returns true if at least one operand is true. In our example, isEitherFunOrEasy is true because Java is fun (isJavaFun is true), even though coding is not easy (isCodingEasy is false).
• The NOT operator (!) is unary, meaning it operates on a single boolean value. It negates the value, so !isCodingEasy is true because it reverses the false value of isCodingEasy.

So the output of this program is:

More information about the topic you could read here , and here .

Here are some Java exercises to practice booleans:

With loops, you can execute any command or a block of commands multiple times. The construction of the while loop is:

Loops are essential in programming to execute a block of code repeatedly. Java provides two commonly used loops: while and for.

1. while Loop: The while loop continues executing a block of code as long as a specified condition is true. Firstly, the condition is checked. While it’s true, the body of the loop (commands) is executed. If the condition is always true, the loop will repeat infinitely, and if the condition is false, the commands in a loop will never be executed.

In this example, the code inside the while loop will run repeatedly as long as count is less than or equal to 5.

2. for Loop: The for loop is used for iterating a specific number of times.

In this for loop, we initialize i to 1, specify the condition i <= 5, and increment i by 1 in each iteration. It will print "Count: 1" to "Count: 5."

Here are some Java coding challenges to practice the loops:

An array in Java is a data structure that allows you to store multiple values of the same type under a single variable name. It acts as a container for elements that can be accessed using an index.

What you should know about arrays in Java:

• Indexing: Elements in an array are indexed, starting from 0. You can access elements by specifying their index in square brackets after the array name, like myArray[0] to access the first element.
• Initialization: To use an array, you must declare and initialize it. You specify the array's type and its length. For example, to create an integer array that can hold five values: int[] myArray = new int[5];
• Populating: After initialization, you can populate the array by assigning values to its elements. All elements should be of the same data type. For instance, myArray[0] = 10; myArray[1] = 20;.
• Default Values: Arrays are initialized with default values. For objects, this is null, and for primitive types (int, double, boolean, etc.), it's typically 0, 0.0, or false.

In this example, we create an integer array, assign values to its elements, and access an element using indexing.

In Java, methods are like mini-programs within your main program. They are used to perform specific tasks, making your code more organized and manageable. Methods take a set of instructions and encapsulate them under a single name for easy reuse. Here's how you declare a method:

• public is an access modifier that defines who can use the method. In this case, public means the method can be accessed from anywhere in your program.Read more about modifiers here .
• static means the method belongs to the class itself, rather than an instance of the class. It's used for the main method, allowing it to run without creating an object.
• void indicates that the method doesn't return any value. If it did, you would replace void with the data type of the returned value.

In this example, we have a main method (the entry point of the program) and a customMethod that we've defined. The main method calls customMethod, which prints a message. This illustrates how methods help organize and reuse code in Java, making it more efficient and readable.

In this example, we have a main method that calls the add method with two numbers (5 and 3). The add method calculates the sum and returns it. The result is then printed in the main method.

All composite types in Java consist of simpler ones, up until we end up with primitive types. An example of a primitive type is int, while String is a composite type that stores its data as a table of characters (primitive type char). Here are some examples of primitive types in Java:

• int: Used for storing whole numbers (integers). Example: int age = 25;
• double: Used for storing numbers with a decimal point. Example: double price = 19.99;
• char: Used for storing single characters. Example: char grade = 'A';
• boolean: Used for storing true or false values. Example: boolean isJavaFun = true;
• String: Used for storing text (a sequence of characters). Example: String greeting = "Hello, World!";

Simple types are grouped into composite types, that are called classes. Example:

We declared a composite type Person and stored the data in a String (name) and int variable for an age of a person. Since composite types include many primitive types, they take up more memory than variables of the primitive types.

See the exercises for a coding practice in Java data types:

String is the most popular class in Java programs. Its objects are stored in a memory in a special way. The structure of this class is rather simple: there’s a character array (char array) inside, that stores all the characters of the string.

String class also has many helper classes to simplify working with strings in Java, and a lot of methods. Here’s what you can do while working with strings: compare them, search for substrings, and create new substrings.

Example of comparing strings using the equals() method.

Also you can check if a string contains a substring using the contains() method.

You can create a new substring from an existing string using the substring() method.

More information about the topic you could read here , here , here , here , and here .

Here are some Java programming exercises to practice the strings:

In Java, objects are instances of classes that you can create to represent and work with real-world entities or concepts. Here's how you can create objects:

First, you need to define a class that describes the properties and behaviors of your object. You can then create an object of that class using the new keyword like this:

It invokes the constructor of a class.If the constructor takes arguments, you can pass them within the parentheses. For example, to create an object of class Person with the name "Jane" and age 25, you would write:

Suppose you want to create a simple Person class with a name property and a sayHello method. Here's how you do it:

In this example, we defined a Person class with a name property and a sayHello method. We then created two Person objects (person1 and person2) and used them to represent individuals with different names.

Here are some coding challenges in Java object creation:

Static classes and methods in Java are used to create members that belong to the class itself, rather than to instances of the class. They can be accessed without creating an object of the class.

Static methods and classes are useful when you want to define utility methods or encapsulate related classes within a larger class without requiring an instance of the outer class. They are often used in various Java libraries and frameworks for organizing and providing utility functions.

You declare them with the static modifier.

Static Methods

A static method is a method that belongs to the class rather than any specific instance. You can call a static method using the class name, without creating an object of that class.

In this example, the add method is static. You can directly call it using Calculator.add(5, 3)

Static Classes

In Java, you can also have static nested classes, which are classes defined within another class and marked as static. These static nested classes can be accessed using the outer class's name.

In this example, Student is a static nested class within the School class. You can access it using School.Student.

More information about the topic you could read here , here , here , and here .

See below the exercises on Static classes and methods in our Java coding practice for beginners:

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Popular for its versatility and ability to create a wide variety of applications, learning Java opens up your possibilities when coding. With it, you’ll be able to develop large systems, software, and mobile applications — and even create mobile apps for Android. Learn important Java coding fundamentals and practice your new skills with real-world projects.

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Hello World

Welcome to the world of Java programming! Java is a popular object-oriented programming language that is used in many different industries.

Learn about datatypes in Java and how we use them. Then, practice your skills with two projects where you create and manipulate variables.

Object-Oriented Java

Learn about object-oriented programming in Java. Explore syntax for defining classes and creating instances.

Conditionals and Control Flow

Conditionals and control flow in Java programs.

Arrays and ArrayLists

Build lists of data with Java arrays and ArrayLists.

Use loops to iterate through lists and repeat code.

String Methods

The Java String class provides a lot of useful methods for performing operations on strings and data manipulation.

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Java Basic Programming : Exercises, Practice, Solution

Java basic exercises [150 exercises with solution].

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1. Write a Java program to print 'Hello' on screen and your name on a separate line. Expected Output : Hello Alexandra Abramov

Click me to see the solution

2. Write a Java program to print the sum of two numbers. Test Data: 74 + 36 Expected Output : 110

3. Write a Java program to divide two numbers and print them on the screen. Test Data : 50/3 Expected Output : 16

4. Write a Java program to print the results of the following operations. Test Data: a. -5 + 8 * 6 b. (55+9) % 9 c. 20 + -3*5 / 8 d. 5 + 15 / 3 * 2 - 8 % 3 Expected Output : 43 1 19 13

5. Write a Java program that takes two numbers as input and displays the product of two numbers. Test Data: Input first number: 25 Input second number: 5 Expected Output : 25 x 5 = 125

6. Write a Java program to print the sum (addition), multiply, subtract, divide and remainder of two numbers. Test Data: Input first number: 125 Input second number: 24 Expected Output : 125 + 24 = 149 125 - 24 = 101 125 x 24 = 3000 125 / 24 = 5 125 mod 24 = 5

7. Write a Java program that takes a number as input and prints its multiplication table up to 10. Test Data: Input a number: 8 Expected Output : 8 x 1 = 8 8 x 2 = 16 8 x 3 = 24 ... 8 x 10 = 80

8. Write a Java program to display the following pattern. Sample Pattern :

9. Write a Java program to compute the specified expressions and print the output. Test Data: ((25.5 * 3.5 - 3.5 * 3.5) / (40.5 - 4.5)) Expected Output 2.138888888888889

10. Write a Java program to compute a specified formula. Specified Formula : 4.0 * (1 - (1.0/3) + (1.0/5) - (1.0/7) + (1.0/9) - (1.0/11)) Expected Output 2.9760461760461765

11. Write a Java program to print the area and perimeter of a circle. Test Data: Radius = 7.5 Expected Output Perimeter is = 47.12388980384689 Area is = 176.71458676442586

12. Write a Java program that takes three numbers as input to calculate and print the average of the numbers. Click me to see the solution

13. Write a Java program to print the area and perimeter of a rectangle. Test Data: Width = 5.5 Height = 8.5

Expected Output Area is 5.6 * 8.5 = 47.60 Perimeter is 2 * (5.6 + 8.5) = 28.20

14. Write a Java program to print an American flag on the screen. Expected Output

15. Write a Java program to swap two variables. Click me to see the solution

16. Write a Java program to print a face. Expected Output

17. Write a Java program to add two binary numbers. Input Data: Input first binary number: 10 Input second binary number: 11 Expected Output

18. Write a Java program to multiply two binary numbers. Input Data: Input the first binary number: 10 Input the second binary number: 11 Expected Output

19. Write a Java program to convert an integer number to a binary number. Input Data: Input a Decimal Number : 5 Expected Output

20. Write a Java program to convert a decimal number to a hexadecimal number. Input Data: Input a decimal number: 15 Expected Output

21. Write a Java program to convert a decimal number to an octal number. Input Data: Input a Decimal Number: 15 Expected Output

22. Write a Java program to convert a binary number to a decimal number. Input Data: Input a binary number: 100 Expected Output

23. Write a Java program to convert a binary number to a hexadecimal number. Input Data: Input a Binary Number: 1101 Expected Output

24. Write a Java program to convert a binary number to an octal number. Input Data: Input a Binary Number: 111 Expected Output

25. Write a Java program to convert a octal number to a decimal number. Input Data: Input any octal number: 10 Expected Output

26. Write a Java program to convert a octal number to a binary number. Input Data: Input any octal number: 7 Expected Output

27. Write a Java program to convert a octal number to a hexadecimal number. Input Data: Input a octal number : 100 Expected Output

28. Write a Java program to convert a hexadecimal value into a decimal number. Input Data: Input a hexadecimal number: 25 Expected Output

29. Write a Java program to convert a hexadecimal number into a binary number. Input Data: Enter Hexadecimal Number : 37 Expected Output

30. Write a Java program to convert a hexadecimal value into an octal number. Input Data: Input a hexadecimal number: 40 Expected Output

31. Write a Java program to check whether Java is installed on your computer. Expected Output

32. Write a Java program to compare two numbers. Input Data: Input first integer: 25 Input second integer: 39 Expected Output

33. Write a Java program and compute the sum of an integer's digits. Input Data: Input an integer: 25 Expected Output

34. Write a Java program to compute hexagon area. Area of a hexagon = (6 * s^2)/(4*tan(π/6)) where s is the length of a side Input Data: Input the length of a side of the hexagon: 6 Expected Output

35. Write a Java program to compute the area of a polygon. Area of a polygon = (n*s^2)/(4*tan(π/n)) where n is n-sided polygon and s is the length of a side Input Data: Input the number of sides on the polygon: 7 Input the length of one of the sides: 6 Expected Output

36. Write a Java program to compute the distance between two points on the earth's surface. Distance between the two points [ (x1,y1) & (x2,y2)] d = radius * arccos(sin(x1) * sin(x2) + cos(x1) * cos(x2) * cos(y1 - y2)) Radius of the earth r = 6371.01 Kilometers Input Data: Input the latitude of coordinate 1: 25 Input the longitude of coordinate 1: 35 Input the latitude of coordinate 2: 35.5 Input the longitude of coordinate 2: 25.5 Expected Output

37. Write a Java program to reverse a string. Input Data: Input a string: The quick brown fox Expected Output

38. Write a Java program to count letters, spaces, numbers and other characters in an input string. Expected Output

39. Write a Java program to create and display a unique three-digit number using 1, 2, 3, 4. Also count how many three-digit numbers are there. Expected Output

40. Write a Java program to list the available character sets in charset objects. Expected Output

41. Write a Java program to print the ASCII value of a given character. Expected Output

42. Write a Java program to input and display your password. Expected Output

43. Write a Java program to print the following string in a specific format (see output). Sample Output

44. Write a Java program that accepts an integer (n) and computes the value of n+nn+nnn. Sample Output:

45. Write a Java program to find the size of a specified file. Sample Output:

46. Write a Java program to display system time. Sample Output:

47. Write a Java program to display the current date and time in a specific format. Sample Output:

48. Write a Java program to print odd numbers from 1 to 99. Prints one number per line. Sample Output:

49. Write a Java program to accept a number and check whether the number is even or not. Prints 1 if the number is even or 0 if odd. Sample Output:

50. Write a Java program to print numbers between 1 and 100 divisible by 3, 5 and both. Sample Output:

51. Write a Java program to convert a string to an integer. Sample Output:

52. Write a Java program to calculate the sum of two integers and return true if the sum is equal to a third integer. Sample Output:

53. Write a Java program that accepts three integers from the user. It returns true if the second number is higher than the first number and the third number is larger than the second number. If "abc" is true, the second number does not need to be larger than the first number. Sample Output:

54. Write a Java program that accepts three integers from the user and returns true if two or more of them (integers) have the same rightmost digit. The integers are non-negative. Sample Output:

55. Write a Java program to convert seconds to hours, minutes and seconds. Sample Output:

56. Write a Java program to find the number of values in a given range divisible by a given value. For example x = 5, y=20 and p =3, find the number of integers within the range x..y and that are divisible by p i.e. { i :x ≤ i ≤ y, i mod p = 0 } Sample Output:

57. Write a Java program to accept an integer and count the factors of the number. Sample Output:

58. Write a Java program to capitalize the first letter of each word in a sentence. Sample Output:

59. Write a Java program to convert a string into lowercase. Sample Output:

60. Write a Java program to find the penultimate (next to the last) word in a sentence. Sample Output:

61. Write a Java program to reverse a word. Sample Output:

62. Write a Java program that accepts three integer values and returns true if one is 20 or more less than the others' subtractions. Sample Output:

63. Write a Java program that accepts two integer values from the user and returns the largest value. However if the two values are the same, return 0 and find the smallest value if the two values have the same remainder when divided by 6. Sample Output:

64. Write a Java program that accepts two integer values between 25 and 75 and returns true if there is a common digit in both numbers. Sample Output:

65. Write a Java program to calculate the modules of two numbers without using any inbuilt modulus operator. Sample Output:

66. Write a Java program to compute the sum of the first 100 prime numbers. Sample Output:

67. Write a Java program to insert a word in the middle of another string. Insert "Tutorial" in the middle of "Python 3.0", so the result will be Python Tutorial 3.0. Sample Output:

68. Write a Java program to create another string of 4 copies of the last 3 characters of the original string. The original string length must be 3 and above. Sample Output:

70. Write a Java program to create a string in the form of short_string + long_string + short_string from two strings. The strings must not have the same length. Test Data: Str1 = Python Str2 = Tutorial Sample Output:

71. Write a Java program to create the concatenation of the two strings except removing the first character of each string. The length of the strings must be 1 and above. Test Data: Str1 = Python Str2 = Tutorial Sample Output:

72. Write a Java program to create a string taking the first three characters from a given string. If the string length is less than 3 use "#" as substitute characters. Test Data: Str1 = " " Sample Output:

73. Write a Java program to create a string taking the first and last characters from two given strings. If the length of each string is 0 use "#" for missing characters. Test Data: str1 = "Python" str2 = " " Sample Output:

74. Write a Java program to test if 10 appears as the first or last element of an array of integers. The array length must be broader than or equal to 2. Sample Output: Test Data: array = 10, -20, 0, 30, 40, 60, 10

75. Write a Java program to test if the first and last elements of an array of integers are the same. The array length must be broader than or equal to 2. Test Data: array = 50, -20, 0, 30, 40, 60, 10 Sample Output:

76. Write a Java program to test if the first and last element of two integer arrays are the same. The array length must be greater than or equal to 2. Test Data: array1 = 50, -20, 0, 30, 40, 60, 12 array2 = 45, 20, 10, 20, 30, 50, 11 Sample Output:

77. Write a Java program to create an array of length 2 from two integer arrays with three elements. The newly created array will contain the first and last elements from the two arrays. Test Data: array1 = 50, -20, 0 array2 = 5, -50, 10 Sample Output:

78. Write a Java program to test that a given array of integers of length 2 contains a 4 or a 7. Sample Output:

79. Write a Java program to rotate an array (length 3) of integers in the left direction. Sample Output:

80. Write a Java program to get the largest value between the first and last elements of an array (length 3) of integers. Sample Output:

81. Write a Java program to swap the first and last elements of an array (length must be at least 1) and create another array. Sample Output:

82. Write a Java program to find the largest element between the first, last, and middle values in an array of integers (even length). Sample Output:

83. Write a Java program to multiply the corresponding elements of two integer arrays. Sample Output:

84. Write a Java program to take the last three characters from a given string. It will add the three characters at both the front and back of the string. String length must be greater than three and more. Test data: "Python" will be "honPythonhon" Sample Output:

85. Write a Java program to check if a string starts with a specified word. Sample Data: string1 = "Hello how are you?" Sample Output:

88. Write a Java program to get the current system environment and system properties. Click me to see the solution

89. Write a Java program to check whether a security manager has already been established for the current application or not. Click me to see the solution

90. Write a Java program to get the value of environment variables PATH, TEMP, USERNAME. Click me to see the solution

91. Write a Java program to measure how long code executes in nanoseconds. Click me to see the solution

92. Write a Java program to count the number of even and odd elements in a given array of integers. Click me to see the solution

93. Write a Java program to test if an array of integers contains an element 10 next to 10 or an element 20 next to 20, but not both. Click me to see the solution

94. Write a Java program to rearrange all the elements of a given array of integers so that all the odd numbers come before all the even numbers. Click me to see the solution

95. Write a Java program to create an array (length # 0) of string values. The elements will contain "0", "1", "2" … through ... n-1. Click me to see the solution

96. Write a Java program to check if there is a 10 in an array of integers with a 20 somewhere later on. Click me to see the solution

97. Write a Java program to check if an array of integers contains a specified number next to each other or two same numbers separated by one element. Click me to see the solution

98. Write a Java program to check if the value 20 appears three times and no 20's are next to each other in the array of integers. Click me to see the solution

99. Write a Java program that checks if a specified number appears in every pair of adjacent integers of a given array of integers. Click me to see the solution

100. Write a Java program to count the elements that differ by 1 or less between two given arrays of integers with the same length. Click me to see the solution

101. Write a Java program to determine whether the number 10 in a given array of integers exceeds 20. Click me to see the solution

102. Write a Java program to check if a specified array of integers contains 10 or 30. Click me to see the solution

103. Write a Java program to create an array from a given array of integers. The newly created array will contain elements from the given array after the last element value is 10. Click me to see the solution

104. Write a Java program to create an array from a given array of integers. The newly created array will contain the elements from the given array before the last element value of 10. Click me to see the solution

105. Write a Java program to check if a group of numbers (l) at the start and end of a given array are the same. Click me to see the solution

106. Write a Java program to create an array left shifted from a given array of integers. Click me to see the solution

107. Write a Java program to check if an array of integers contains three increasing adjacent numbers. Click me to see the solution

108. Write a Java program to add all the digits of a given positive integer until the result has a single digit. Click me to see the solution

109. Write a Java program to form a staircase shape of n coins where every k-th row must have exactly k coins. Click me to see the solution

110. Write a Java program to check whether the given integer is a power of 4 or not. Given num = 64, return true. Given num = 6, return false. Click me to see the solution

111. Write a Java program to add two numbers without arithmetic operators. Given x = 10 and y = 12; result = 22 Click me to see the solution

112. Write a Java program to compute the number of trailing zeros in a factorial. 7! = 5040, therefore the output should be 1 Click me to see the solution

113. Write a Java program to merge two given sorted arrays of integers and create another sorted array. array1 = [1,2,3,4] array2 = [2,5,7, 8] result = [1,2,2,3,4,5,7,8] Click me to see the solution

114. Write a Java program that rotates a string by an offset (rotate from left to right. Click me to see the solution

115. Write a Java program to check if a positive number is a palindrome or not. Input a positive integer: 151 Is 151 is a palindrome number? true Click me to see the solution

116. Write a Java program that iterates integers from 1 to 100. For multiples of three print "Fizz" instead of the number and print "Buzz" for five. When the number is divided by three and five, print "fizz buzz". Click me to see the solution

117. Write a Java program to compute the square root of a given number. Input a positive integer: 25 Square root of 25 is: 5 Click me to see the solution

118. Write a Java program to get the first occurrence (Position starts from 0.) of a string within a given string. Click me to see the solution

119. Write a Java program to get the first occurrence (Position starts from 0.) of an element of a given array. Click me to see the solution

120. Write a Java program that searches for a value in an m x n matrix. Click me to see the solution

121. Write a Java program to reverse a linked list. Example: For linked list 20->40->60->80, the reversed linked list is 80->60->40->20 Click me to see the solution

122. Write a Java program to find a contiguous subarray with the largest sum from a given array of integers. Note: In computer science, the maximum subarray problem is the task of finding the contiguous subarray within a one-dimensional array of numbers which has the largest sum. For example, for the sequence of values −2, 1, −3, 4, −1, 2, 1, −5, 4; the contiguous subarray with the largest sum is 4, −1, 2, 1, with sum 6. The subarray should contain one integer at least. Click me to see the solution

123. Write a Java program to find the subarray with smallest sum from a given array of integers. Click me to see the solution

124. Write a Java program to find the index of a value in a sorted array. If the value does not find return the index where it would be if it were inserted in order. Example: [1, 2, 4, 5, 6] 5(target) -> 3(index) [1, 2, 4, 5, 6] 0(target) -> 0(index) [1, 2, 4, 5, 6] 7(target) -> 5(index) Click me to see the solution

125. Write a Java program to get the preorder traversal of the values of the nodes in a binary tree. Example: 10 / \ 20 30 / \ 40 50 Expected output: 10 20 40 50 30 Click me to see the solution

126. Write a Java program to get the in-order traversal of its nodes' values in a binary tree. 10 / \ 20 30 / \ 40 50 Example:{10, 20, 30, 40, 50} Output: 40 20 50 10 30 Click me to see the solution

127. Write a Java program to get the Postorder traversal of its nodes' values in a binary tree. 10 / \ 20 30 / \ 40 50 Click me to see the solution

128. Write a Java program to calculate the median of a non-sorted array of integers. Original array: [10, 2, 38, 22, 38, 23] Median of the said array of integers: 30 Original array: [10, 2, 38, 23, 38, 23, 21] Median of the said array of integers: 23 Click me to see the solution

129. Write a Java program to find a number that appears only once in a given array of integers. All numbers occur twice. Source Array : [10, 20, 10, 20, 30, 40, 40, 30, 50] 50 appears only once Click me to see the solution

130. Write a Java program to find the maximum depth of a given binary tree. Sample Output: The Maximum depth of the binary tree is: 3 Click me to see the solution

131. Write a Java program to find the updated length of a sorted array where each element appears only once (remove duplicates). Original array: [1, 1, 2, 3, 3, 3, 4, 5, 6, 7, 7] The length of the original array is: 11 After removing duplicates, the new length of the array is: 7 Click me to see the solution

132. Write a Java program to find the updated length of a given sorted array where duplicate elements appear at most twice. Original array: [1, 1, 2, 3, 3, 3, 4, 5, 6, 7, 7, 7, 7] The length of the original array is: 13 After removing duplicates, the new length of the array is: 10 Click me to see the solution

133. Write a Java program to find a path from top left to bottom in the right direction which minimizes the sum of all numbers along its path. Note: Move either down or right at any point in time. Sample Output: Sum of all numbers along its path: 13 Click me to see the solution

134. Write a Java program to find distinct ways to climb to the top (n steps to reach the top) of stairs. Each time you climb, you can climb 1 or 2 steps. Example: n = 5 a) 1+1+1+1+1 = 5 b) 1+1+1+2 = 5 c) 1+2+2 = 5 d) 2+2+1 = 5 e) 2+1+1+1 = 5 f) 2+1+2 = 5 g) 1+2+1+1 = 5 h) 1+1+2+1 = 5 Sample Output: Distinct ways can you climb to the top: 8 Click me to see the solution

135. Write a Java program to remove duplicates from a sorted linked list. Original List with duplicate elements: 12->12->13->14->15->15->16->17->17 After removing duplicates from the said list: 12->13->14->15->16->17 Click me to see the solution

136. Write a Java program to find possible distinct paths from the top-left corner to the bottom-right corner of a given grid (m x n). Note: You can move either down or right at any point in time. Sample Output: Unique paths from top-left corner to bottom-right corner of the said grid: 3 Click me to see the solution

137. Write a Java program to find possible unique paths considering some obstacles, from top-left corner to bottom-right corner of a given grid (m x n). Note: You can move either down or right at any point in time and an obstacle and empty space is marked as 1 and 0 respectively in the grid. Sample grid: int[][] obstacle_Grid ={ {0, 0, 0}, {0, 1, 0}, {0, 0, 0}, }; Sample Output: Unique paths from top-left corner to bottom-right corner of the said grid (considering some obstacles): 2 Click me to see the solution

138. Write a Java program to find the longest words in a dictionary. Example-1: { "cat", "flag", "green", "country", "w3resource" } Result: "w3resource" Example-2: { "cat", "dog", "red", "is", "am" } Result: "cat", "dog", "red" Click me to see the solution

139. Write a Java program to get the index of the first and the last number of a subarray where the sum of numbers is zero. This is from a given array of integers. Original Array : [1, 2, 3, -6, 5, 4] Index of the subarray of the said array where the sum of numbers is zero: [0, 3] Click me to see the solution

140. Write a Java program to merge all overlapping intervals from a given collection of intervals. Sample Output: 1 6 8 10 15 20 Click me to see the solution

141. Write a Java program to check if a given string has all distinct characters. Sample Output: Original String : xyyz String has all unique characters: false Click me to see the solution

142. Write a Java program to check if two strings are anagrams or not. According to Wikipedia "An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. For example, the word anagram can be rearranged into nag a ram, or the word binary into brainy." Sample Output: String-1 : wxyz String-2 : zyxw Check if two given strings are anagrams or not?: true Click me to see the solution

143. Write a Java program to merge the two sorted linked lists. Sample Output: Merge Two Sorted ListsT: 1 2 3 7 9 13 40 Click me to see the solution

144. Write a Java program to remove all occurrences of a specified value in a given array of integers. Return the updated array length. Sample Output: Original array: [1, 4, 6, 7, 6, 2] The length of the new array is: 4 Click me to see the solution

145. Write a Java program to remove the nth element from the end of a given list. Sample Output: Original node: 1 2 3 4 5 After removing 2nd element from end: 1 2 3 5 Click me to see the solution

146. Write a Java program to convert an array of sorted items into a binary search tree. Maintain the minimal height of the tree. Sample Output: 2 1 4 6 5 3 Click me to see the solution

147. Write a Java program to find the number of bits required to flip to convert two given integers. Sample Output: 2 Click me to see the solution

148. Write a Java program to find the index of the first unique character in a given string. Assume that there is at least one unique character in the string. Sample Output: Original String: wresource First unique character of the above: 0 Click me to see the solution

149. Write a Java program to check if a given string is a permutation of another given string. Sample Output: Original strings: xxyz yxzx true Click me to see the solution

150. Write a Java program to test if a binary tree is a subtree of another binary tree. Sample Output: Original strings: xxyz yxzx true Click me to see the solution

Java Code Editor:

More to Come !

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10 Best Java Projects for Beginners 2024 [With Source Code]

If I could go back in time to help my younger self learn Java, I'd tell him to build more Java projects!

That's exactly why I wrote this article: to share 10 Java projects to help beginners like you.

Whether you’re looking to start a career in Java development or enhance your portfolio, these Java projects are perfect for leveling up your Java skills.

I’ve also personally designed the first three Java projects to be step-by-step tutorials so you can follow along with me to get hands-on and code some cool stuff.

You can think of these tutorial projects as taking a free Java course while growing your Java portfolio!

I'm also regularly adding new Java projects with step-by-step tutorials, so make sure you bookmark this page and check back for the latest Java projects to grow your skills.

Without further ado, let’s dive in and start building with Java!

• 10 Best Java Projects for Beginners in 2024

1. Java Chat Application

What is this Java project?

In this Java project, you'll build a chat application, a dynamic and engaging tool that facilitates real-time communication between users

I've also designed this project to be a step-by-step tutorial so you can follow along with me to build something very cool and very practical.

This project also goes beyond merely creating a functional application; it serves as an excellent example of utilizing Java's networking capabilities and Swing framework to create interactive and responsive desktop applications.

It's a perfect addition to your portfolio, particularly if you're looking to demonstrate your proficiency in Java development, as it showcases essential programming concepts within a context that is both interactive and practically valuable.

So get ready and fire up your favorite Java IDE , and let's get building!

Java Skills Covered:

• Networking Logic: Develop the core logic for establishing client-server connections, including handling multiple client connections simultaneously.
• Dynamic UI Updates: Utilize the Swing framework to dynamically update the chat interface, reflecting messages and user actions in real-time, thus enhancing the overall user experience.
• Event Handling: Manage action and window events to capture user inputs such as sending a message or exiting the chat.
• User Interface Design: Apply principles of Swing GUI design to create a clean, user-friendly interface for the chat application, demonstrating skills in creating appealing desktop applications.
• Multithreading: Implement multithreading to handle concurrent tasks, such as listening for incoming messages while allowing the user to type new messages.
• Best Practices in Java: Write clean, efficient, and well-structured Java code, adhering to best practices for readability, maintainability, and performance.

Build This Java Project Here

2. Java Chess Game

In this project, you will create a fully interactive chess game, a classic strategy game that brings to life the timeless battle between two opposing forces on a checkered board.

I've also designed this Java project to be a step-by-step tutorial so you can follow along with me to build something fun, challenging, and very impressive!

This project also goes beyond creating a basic application; it's about mastering the intricacies of Java's Swing framework to create a visually appealing and user-interactive gaming experience.

It's also a perfect addition to your portfolio, particularly if you want to demonstrate your ability to handle complex logic and state management, problem-solving skills, and an understanding of GUI development.

So, warm up those coding fingers, and let’s get started with this exciting project!

• Game Logic Implementation: Craft the fundamental logic for chess, including piece movements, capturing mechanics, and game-ending conditions like checkmate.
• Graphical User Interface (GUI) Design: Utilize the Swing framework to design and implement a user-friendly and visually appealing interface for the chess game.
• Event-Driven Programming: Manage user interactions through event listeners, enabling players to move pieces, respond to game states, and interact with the game dynamically.
• Advanced State Management: Develop sophisticated game state management to handle the various states of a chess game, including tracking turns, game status, and special moves.
• Problem-Solving: Demonstrate advanced problem-solving abilities in implementing chess rules, strategizing piece movements, and validating legal moves.
• Best Practices in Java: Write clean, efficient, and well-structured Java code, following best practices for software design, maintainability, and GUI development.

3. Java Email Client

In this Java project, you're going to build an email client application, allowing users to interact with their emails through a desktop interface.

This is another Java project that I've designed to be a step-by-step tutorial, so you can follow along with me to build something practical, challenging, and quite cool! I'll also guide you on how to setup your email client to connect with Gmail.

This tutorial is not just about coding; it's about applying Java's powerful capabilities in networking and the Swing framework to craft applications that are both interactive and efficient.

So, stretch out those digits and get started with this exciting project!

• Email Protocols: Learn to use JavaMail API for handling SMTP and IMAP protocols, enabling the sending and receiving of emails.
• Dynamic UI Updates: Utilize the Swing framework to dynamically update the email client interface, reflecting changes in real-time and improving the user experience.
• Event Handling: Implement action listeners to capture user interactions like composing emails, adding attachments, and authenticating users.
• User Interface Design: Employ Swing GUI design to develop a clean, intuitive interface for the email client, showcasing your ability to craft appealing and functional desktop applications.
• Session Management: Handle email session management efficiently, ensuring secure and persistent connections to email servers.
• Best Practices in Java: Write clean, effective, and well-organized Java code, adhering to best practices for code readability, maintainability, and application performance.

4. Brick Breaker Game

This brick breaker game is one of many fun Java projects that has you trying to break bricks at the top of the screen. The player controls a tiny ball placed on a small platform at the bottom of the screen, which can be moved around from left to right using the arrow keys. The goal is to break the bricks without missing the ball with your platform. The project makes use of Java swing and OOPS concepts , among other things.

Source Code

5. Data Visualization Software

Data Visualization has become important as it displays data visually using statistical graphics and scientific visualization, to the point where data visualization software has been created. This project displays the node connectivity in networking in data visualization form. This node connectivity can be located at different locations via mouse or trackpad. 

6. ATM Interface

This somewhat complex Java project consists of five different classes and is a console-based application. When the system starts the user is prompted with a user id and user pin. After entering the details successfully, the ATM functionalities are unlocked. 

7. Web Server Management System

This web server management system project deals with the information, maintenance, and information management of the web server. It covers several concepts, including tracing the physical location of an entity, and identifying URL authorities and names.

8. Airline Reservation System

The project is a web-based one featuring open architecture that keeps up with the dynamic needs of the airline business by the addition of new systems & functionality. The project includes online transactions, fares, inventory, and e-ticket operations.

The software consists of four key modules, i.e., user registration, login, reservation, and cancellation. The app allows communication through a TCP/IP network protocol thereby facilitating the usage of internet & intranet communication globally.

9. Online Book Store

This project is mainly developed for bookstores and shops to digitize the book-purchasing process. The aim is to create an efficient and reliable online bookselling platform. It also records sold and stock books automatically in the database.

10. Snake Game in Java

If you are a ’90s kid or an adult you have probably played this game on your phone. The goal of this game is to make the snake eat the tokens without the snake being touched to the boundary on the screen. Every time the snake eats the token the score is updated. The player loses when the snake touches the boundary and the final score is displayed.

• How To Setup Your Java Environment

Before you start coding in Java, it's essential to have your coding environment properly set up and ready for action.

Being a compiled language that runs on a wide range of devices through the Java Virtual Machine (JVM), Java requires a bit more setup compared to interpreted languages like JavaScript that run directly in web browsers.

Here's how to set up a Java development environment on most operating systems.

Install a Java Development Kit (JDK)

First and foremost, you need the JDK, which includes the Java Runtime Environment (JRE) and the compilers and tools needed to compile and run Java applications.

• Download the JDK: Visit AdoptOpenJDK or Oracle's official Java site to download the JDK. I recommend choosing the LTS (Long-Term Support) version for stability.
• Install the JDK: Run the installer and follow the instructions. Make sure to set the JAVA_HOME environment variable to the JDK installation path and add the JDK's bin directory to your system's PATH . This is crucial for making Java commands accessible from your command line or terminal.

Verify Installation

After setting up, verify that everything is working correctly.

To begin, open a terminal or command prompt and run these commands to check the installed Java and Java compiler versions, respectively:

Then, try creating a simple Java program and compile it using:

Then run it with:

This should confirm your JDK is correctly set up.

Install a Java IDE or Code Editor

You'll need an IDE or code editor that supports Java syntax highlighting and potentially IntelliSense for code completion.

Eclipse, NetBeans, and IntelliJ IDEA are some of the most popular choices and three of my personal favorites.

That said, I'd also consider Visual Studio Code (VSCode) as this is a hugely popular choice among developers for various languages thanks to its extensive and lightweight feature set and vast library of extensions.

If you do go the VSCode route, head to the VSCode extension marketplace and install the ‘Extension Pack for Java’ from Microsoft, and you’ll be good to go.

Install Git [Optional but Recommended]

If you're really new to coding, you might want to skip this step, but even then, I'd really recommend becoming familiar with Git as soon as you can.

If you want the TL-DR, Git is a version control system that lets you track changes in your code and collaborate with others.

While this step is not strictly necessary for Java development, it's a best practice, especially for larger projects or when working in a team.

Simply download Git from the official Git website , and during installation, you can accept most default settings. That said, you might want to choose your preferred text editor and ensure that Git is added to your system's PATH.

• Wrapping Up

And there we have it! If you've taken the time to build these 10 Java projects, you should be feeling much more competent and confident with Java.

You'll also have a burgeoning Java portfolio that's packed full of interesting and practical Java projects, each demonstrating your dedication and abilities.

I also hope you enjoyed following along with my step-by-step tutorial on the first three Java projects!

My motivation with these Java tutorials is to guide you through the nuances of Java development while also giving you hands-on experience that you'd usually only get when taking a Java course.

Here at hackr.io , we're huge fans of project-based learning, so I hope these Java projects have bolstered your confidence and sparked a deeper interest in web development or any other form of Java development.

Remember, the journey doesn't end here!

With new projects and step-by-step tutorials regularly added to this page, be sure to check back often for new opportunities to refine your Java skills and expand your portfolio.

Happy coding!

Want to sharpen up your Java development skills in 2024? Check out:

Udemy's Top Rated Course: Java 17 Masterclass: Start Coding in 2024

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Top 15 Java Project Ideas for Beginners

Programming is like riding a bike; you can read about how to do it all day, but the best way to get started is to practice. A portfolio of programming projects can help you learn coding skills while providing a professional advantage during your job search as well. Specifically, by highlighting more advanced programming projects in your portfolio, you can showcase your skills to recruiters and hiring managers which might help you land your dream job.

Creating a portfolio of projects is important for anyone wanting to enter the industry, and it’s something we cover in our guide to becoming a web developer . In this article, however, we will specifically explore Java projects for beginners.

Java is a great first programming language because it has a broad feature set and is used in a variety of applications, including desktop applications, Android apps, and iOS app development. Java is also in high demand, with 40 percent of respondents in Stack Overflow’s 2020 Developer Survey claiming to use the language.

The projects in this list focus on different skills needed to build out a well-rounded Java skill set; progressing in difficulty as the list continues.

1. Sum A + B

A sum-based project is a great way to get started with Java programming. The project is quite simple — the user will input two numbers (which are treated as the variables A and B), and the program will add them together and present the sum of A + B. This can help you learn to work with methods and integers. JavaTPoint offers a great guide for a Sum A + B project , and working through this type of project can help you become familiar with Java processes.

2. Reversing a String

In Java, strings refer to sequences of characters that behave like an object within the Java environment. It’s a very common and widely used Java data structure, storing data in an array of characters. Creating a simple application that reverses a string can help you understand strings and how they’re used in a Java environment.

For example, creating a program that reverses a string the user enters (e.g., “HELLO” to “OLLEH”). This project has many possible solutions, which is a key concept to understand as you start coding. And, oftentimes the best solution can change depending on the attributes and objective of the project you’re working on.

Check out the guide from JavaTutoring to learn more about reverse-string projects and the multiple solutions available.

3. Number Guessing Game

This is a simple game that can help you get your feet wet with Java. The game is relatively simple — the computer generates a random number, and the user must guess the number. The computer will then let the user know that their guess is too high, too low, or correct. This can be free-form, allowing an unlimited number of guesses, or give the user a set number of guesses before the game ends.

Number guessing games involve some Java programming basics like accepting inputs from the user, creating classes, and using conditional statements. GeeksforGeeks offers a number guessing game walkthrough that can help you get started.

4. Creating a Calculator

Programming a calculator is a great beginning project for people learning many different programming languages, including Java. It’s a great introduction due to its simplicity and covers many of the most basic programming concepts.

This is a great Java project for beginners because you can build your calculator’s functionality as your skills grow. Initially, your calculator might perform basic functions like addition and subtraction, building in geometric expressions and scientific calculations as your skills grow. Later on, you can also build in a more complex user interface.

UMK Games has a Java calculator app development tutorial to help you get started on your project.

5. Simple Banking Application

Creating a basic banking application is a great way to practice your Java skills, as having some grasp of the language will be needed to complete the project.

This project will introduce you to many basic Java concepts like printing, variables, if/else statements, strings, loops, and more. You’ll create an application that allows a user to check a bank balance, deposit money, withdraw money, and exit the interface. Check out this ATM/simple banking app to help you work through this project.

6. Basic Android Application

Java is the basic programming language used for Android applications, and it’s critical for anyone who wants to get into app development. Writing code for a mobile application requires unique tools and ways of thinking about how an app should operate — developing around a keyboard and mouse is very different from developing for taps and swipes.

Coding Android applications requires using an integrated development environment (IDE) called Android Studio . This environment will allow you to code across Android app ecosystems.

Creating a basic mobile application is a great project for people with some Java experience and knowledge. The Android developer community provides a walkthrough on how to create your first app — some basic Java knowledge will be needed to get started.

7. Budget Tracker

Write an application that keeps track of a household’s budget , adding fields for expenses, income, and recurring costs. This is a great project because it can scale with your abilities. As your skills grow, perhaps add a feature that lets the user specify a date range or graph out amounts each month. You can also connect your tracker to an API that inputs the correct tax rate for the user’s location.

This project may appear simple, but it can be directly applied to your life. Have you tried using a budget app but didn’t feel like it had all of the features you wanted? For this project, you can create a custom solution for your needs. You can even create your budget tracker as a smartphone app.

8. Fortune Teller

This is a simple program that can get you started working with web APIs. APIs allow two applications to talk to each other, and they’re an important part of many programming projects. APIs are commonly used in projects that interact with web-based applications, so understanding how to use them can help you become a more accomplished programmer.

Your fortune teller application can check a horoscope and display it to the user depending on their astrological sign. This is a simple application but a great way to learn something new in your Java programming journey.

9. Address Book

This project is a great option to illustrate your skills in developing applications that can interact with databases. Your application should keep track of contacts, their details (e.g., address, phone, email), and notes about each contact in a simple database.

If you’re interested in completing this project, here’s a list of prompts from Re Di School that can help you get started.

10. Currency Converter Program

Currency converters seem relatively simple — you take an amount of one currency and use a conversion rate to find the equivalent amount in another currency. It might not be the most complicated project, but it can teach you valuable skills because currency converter programs require the use of APIs in a slightly more complicated way.

This project is best suited for someone with some knowledge of Java, making it a great intermediate project. Creating a currency converter will require interacting with web APIs to get conversion rates — and then using that information to differentiate between currencies. Medium has an online currency conversion API tutorial to help you along.

11. Create a Chess Game

Chess is an ancient game that also makes for a promising intermediate Java coder project. This project involves creating classes for each element of the game, coding in the rules of chess, and creating an interactive experience for the user.

Recreating chess requires thinking about and planning how to structure the architecture of your code. You’ll need to break down a commonly understood game into its most basic components and then build these components from scratch.

For some ideas on how to build your own chess game, check out the GeeksforGeeks chess tutorial which includes code samples to help you along.

12. Snake Game

Snake is a classic video game that was created in the 1970s, gracing many computers and smartphones over the years. In this game, the player controls a snake, and the objective is to eat as many bits of food as possible. When the snake eats some food, its body grows. If the player hits its body as it moves throughout the map, they lose. This game is a bit more complicated than some previous projects we’ve discussed, making it a great project for intermediate developers.

GeeksforGeeks offers a Snake Game guide that illustrates the thought process, as well as code examples, to help you build your own game.

13. Copycat Project

Once you have some Java skills under your belt, creating a close copy of another program or service can help you learn a wider set of skills. This kind of project can help push you outside your comfort zone while practicing in-demand skills.

Think about which programs you find most useful or that are popular. Consider trying to create a text editor that’s similar to Word or Notepad. Or, you could create a web browser that operates similarly to Chrome or Safari.

While this is a more involved project that will require some level of familiarity with Java, alongside a time commitment to research and plan, the benefits to both your professional portfolio and skill set will be substantial.

14. Contribute to an Open-Source Project

Working with an open-source project is where things start to get “real” — the code you contribute could become part of a real-life piece of software that other people use. Contributing to open-source projects is a great way to build your skills, get experience working in a real-world programming environment, and show off your skills to potential recruiters and employers.

There are many open-source projects available that are always growing and changing. While contributing to an open-source project might feel intimidating at first, don’t feel discouraged. Everyone has to start somewhere, and open-source projects are where a lot of aspiring programmers polish their skills. Furthermore, finding a project with an active community can help you if you get stuck on projects in the future, so it’s well worth the time and energy investment.

GitHub is a great place to find beginner-friendly projects in a variety of languages, including Java. This GitHub Java guide will help you learn more about which projects may be right for you.

15. Build Something You Can Use

The goal of completing side projects is to build something that can be used by others. Once you have some skills under your belt, consider building a program or app that you’ll use during your time at work or school. This will give you the full experience of developing software — figuring out requirements, testing the project, and maintaining it.

What this project will look like depends on your needs. Programming can help you automate boring tasks on your system such as crunching numbers, moving files around, collecting information, or other repetitive tasks. Aspiring programmers who are in school can build tools that help them with homework and test preparation using a flashcard application. Whichever type of project you decide to pursue, you’ll benefit from both the usability of your new program or app, as well as the enhancement of your skills and portfolio.

Are These Projects Too Advanced? Here’s How You Can Get Started With Java to Build Your Portfolio

Jumping straight into a big project can feel intimidating without knowing how to code. Thankfully, there are many options available for anyone who wants to learn programming skills and start working on portfolio projects. The choice that’s right for you will depend on your goals, the amount of time you have to devote to learning, and the budget you have for your educational pursuits.

Traditional Degrees

Independent learning options.

Learning to code in Java can help you get started in a variety of applicable fields, such as engineering and web development. Many of these opportunities are both lucrative and promising in their long-term job security. For example, software developers are projected to see 22 percent job growth by 2029, which is much higher than the average job growth projected for most fields in the United States.

One great way to seize this opportunity is to enroll in a coding bootcamp. These courses can provide you with a broad set of coding-related skills in a relatively short time frame, offering an introduction to crucial skills through hands-on, project-based learning. Bootcamps are also accessible to a variety of prior experience levels — everyone from career upskillers to complete beginners. Columbia Engineering Coding Boot Camp is an excellent example of a well-respected, employer-recognized bootcamp that you may wish to consider, as they offer additional continuation courses covering coding in Java and other in-demand programming languages.

Completing a degree in computer science allows students to learn coding-oriented skills across multiple years of study. Typically, degree programs require four years of full-time study (or longer if a student is only taking classes part-time). Costs vary depending on scholarships that are available and how many credit hours a student needs to graduate.

Computer science degrees can help someone learn a very broad set of skills over multiple years of study. If you’re interested in earning a degree in computer science, consider The Fu Foundation School of Engineering and Applied Science at Columbia University undergraduate program in computer science .

Alternatively, coders may opt to learn Java coding through self-guided options. There are many independent resources through which to hone Java skills and build a valuable portfolio. These may include free online courses, instructional videos, and educational apps and sites. Such resources are a great option for learning Java coding while simultaneously honing your time management and accountability skills.

One great resource for learning Java on your own is edX’s set of Java courses . Many of these courses are free, and they are based on curricula from highly ranked institutions. Some courses may offer a certificate of completion or a professional certificate for a fee.

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Top 25 Java Projects for Beginners to Practice in 2024

• Jan 01, 2024
• 13 Minutes Read
• Why Trust Us We uphold a strict editorial policy that emphasizes factual accuracy, relevance, and impartiality. Our content is crafted by top technical writers with deep knowledge in the fields of computer science and data science, ensuring each piece is meticulously reviewed by a team of seasoned editors to guarantee compliance with the highest standards in educational content creation and publishing.
• By Arkadyuti Bandyopadhyay

Java is one of the best languages one can learn when stepping into the world of programming. The main reason is that Java is an OOP (Object Oriented Programming) language, making it closer to the real world.

Despite being started in 1992, Java is still being actively used for the development of software across the globe. According to Glassdoor , the national average salary for a Java Developer is around $87,000 in the United States.

Looking at the above statistics you must have understood that becoming a Java developer is not all you have on your plate, applying it to develop and deploy some simple and fun projects is more important to give your resume a push in the software industry.

Before jumping into to practice some amazing Java Projects for Beginners in 2024 , let’s understand briefly why Java is so popular.

Why do Companies prefer Java for building Software?

About 30.55% of professional developers around the world make use of Java programming as their core technology. It  is in much demand in real-world applications because of the following reasons:

• Unlike other programming languages, Java uses both a compiler and an interpreter for the conversion of a high-level language into machine code. 
• Being an object-oriented programming language, Java is much closer to the real world than most other languages, with concepts like Abstraction, encapsulation, inheritance, and polymorphism.
• Java quickly became a favorite of the software industry because it made the development process more efficient and solved the problem of software distribution across platforms.
• Java’s memory management is quite robust by nature. Java handles garbage collection automatically without the user needing to worry about it. 
• Java's usefulness has grown over the years as programmers develop new ways to use it on servers, bringing performance and scalability to a whole new level.

It is often a programmer’s dilemma as to what they can build with the concepts they have learned via some tutorial on the Internet. Good project ideas, especially ones that help boost your portfolio and improve your understanding of the underlying concepts are hard to come by.

Our list suggests some fun Java project ideas for beginners with fresh topics programmers that should get you started.

Why Java Practice Projects are Important?

Java continues to be a programming language that is in much demand. But sadly, just mentioning “I know Java” on your resume isn’t going to be enough, is it? Showing recruiters that you can work your way through Java with some real-world projects is going to look better.

Projects are a way to show that one understands the underlying concepts of the programming language and is ready to apply them to solve real-world problems. Project-based learning helps teach many concepts that the main theory can never teach.

Implementing a few Java practice projects not only demonstrates how Java works behind the scenes but also helps boost the portfolio. These projects don’t have to be very complex; they should be something basic, which puts some of Java’s many features into play.

Best 25 Java Projects for Beginners in 2024

Let's first look at all Java Project Ideas in the list below:

  Bank Management Software

 Temperature Converter

Electricity Billing System

Supermarket Billing Software

Memory Game

Link Shortener

Chatting Application

Digital Clock

Quizzing app

Email-Client Software

 Student Management System

Airline Reservation System

Food Ordering System

 Text-based RPG (role-playing game)

Media Player Application

Currency Converter

Brick Breaker Game

Number Guessing Game

Tic-Tac-Toe Game

Word Counter 

• Online Quiz Platform
• Health and Fitness Tracker
• Appointment Scheduler
• Online Auction System
• Language Learning App

As a beginner, it might be difficult to come up with ideas for projects, that's why we have decided to curate a list of amazing Java projects for beginners.

1) Bank Management Software

Perhaps the simplest software that you can work with is the one that allows you to deal with bank accounts and transactions regarding it. Designing a robust system that allows you to engage in transactions is something that every beginner should get started with.

The proposed system is a web-based project that allows you to do everything a bank would allow you to do naturally. One should be able to deposit money and withdraw money from a particular account as the user desires.

There should be a validation to allow only a particular amount of cash inflows at any time, as well as to allow withdrawals if the balance is sufficient. There should also be the calculation of interest and its addition to the balance every month.

There can be multiple improvements for this project, including adding support for multiple types of accounts. We started with this because it is still one of the most popular Java projects for beginners.

Source code:

2) Temperature Converter

One of the best ways to get started with Java practice projects is by building conversion tools, and what could be simpler than a temperature conversion tool? One already knows the mathematical formula needed for conversion from Fahrenheit to Celsius and from Celsius to Fahrenheit.

In this tool, we have to take input for the value to be converted, do the desired conversion, and then output the converted value. There is also the concept of sanitizing the text being input and displaying an error for incorrect values. There should be a proper error if a non-numerical value is inserted as input.

Source Code:

3) Electricity Billing System

The main task of designing software is to automate something with greater efficiency. In our day-to-day lives, one of the biggest systems that are in dire need of automation is the billing system for electricity.

Till today, bills are generated manually after readings are taken. Work done to automate reading meters and generating bills will go a long way in ensuring work is done in the most efficient way possible while ensuring accuracy in the numbers quoted on the bills.

There are lots of additions that can be done to ensure this remains on top. There aren’t any hard and fast requirements for a flexible mini-project like this one.

4) Supermarket Billing Software

Most supermarkets use software for preparing the final bill before the goods are packed. This software itself can very easily be designed by someone starting in Java. (Note that most of the actual software used for billing in supermarkets uses Java itself).

This billing software sums the amount for individual items and then adds them up to get the final sum that the customer has to pay. The number of individual items and the price of each item should be editable for the user. Also, there should be an option to remove the item from the list altogether.

If one wants to extend their project, one can consider adding an option to export existing bills or implement a way to save previous bills in memory.

5) Memory Game

This might be one of the most unique projects that one can come up with while learning the game. Java’s graphics library allows the design of a wide range of small video games that can easily go up on your resume .

In a memory game, a matrix consisting of a large number of smaller boxes will be available, and the user’s task will be to win the game by matching patterns on particular boxes.

When the user clicks one box, it should show its pattern – if the next box clicked on has a similar pattern, both boxes should remain flipped and the score should be added. If the second box flipped does not have a similar pattern, both boxes should stop showing their pattern.

There is a lot of scope in doing this, and a lot of possible improvements. For instance, there can be a way of storing the number of moves required as well as a leaderboard system for hosting folks that have the best memory possible. 

6) Link Shortener

This might seem like something too basic, but it’s something that should exist on your portfolio (if you want to be a good programmer, that is). A good link shortener does wonders in proving not your skills in Java, but your skills in understanding data structures and algorithms.

Hashing is the main concept required for building something, but the challenge is getting it to run on all browsers and point to the actual page instead of showing an error. There should be some validation to check if the link inserted is a proper link or not, and then the appropriate logic should be applied to “shorten” it.

Oh yes, there should be a proper error telling the user that the link entered isn’t a proper link. One improvement that can be done here is adding some sort of history for the application for storing previously shortened links, and for adding an option to add the shortened link to the clipboard directly.

7) Chatting Application

Wondering what a “chatting” application is doing on a list of beginners' projects about Java? Turns out that Java has quite some intense support for network-based libraries too. However, instead of basic request-based communication, this application will need to communicate through sockets.

There are multiple ways to implement this and is probably one of the best ways for people to learn the networking functionality available with Java. A good GUI works wonders in improving the project and improving its appeal to the users.

However, it would be cool if support could be added for file transfer besides normal chat messages. After all, messaging applications would not have come so far if it wasn’t possible to send songs and funny clips to your friends and family, would it?

8) Digital Clock

Another simple and easy-to-implement project that you can show off is a digital clock. Some knowledge of UI design is needed here if a visually pleasing design is wanted (which does help a lot!). This requires some event handling as well as periodic execution functions to achieve the desired effect.

Extra features such as other modes, including that of a stopwatch and a counter can be made to improve the project’s output. If that itself isn’t challenging enough, adding the option to move between time zones and show the time according to the time zone selected is certainly going to be a challenge.

9) Quizzing app

One of the more subtle project to practice that Java allows one to build is apps. Google built Android to be built on top of the Java ecosystem, allowing all features of the Android OS to build an app. One of the best apps to get started is probably a quiz app for distributing questions to friends!

As for extensions, one can be creative when one wants to improve this project. Authentication for users, export a set of questions from the app for use on other apps with the quiz, an online ranking system based on the number of people who have taken the quiz – the possibilities are endless.

Note that the extensions might require some expertise on the Android platform, which might not be taken upon immediately for most Java beginners. So, if you are more into app development, this is an exciting Java project idea to start with.

10) Email-Client Software

Email has been one of the most important applications of the World Wide Web since its inception. It’s extremely relevant even in today’s world, as most formal conversations take place online via email.

Designing software that allows one to deal with emails not only helps add a decent project to your resume but also allows you to explore some unexplored parts of Java. Designing a proper body with headers and then sending it via a proper channel (SMTP or POP3, depending on the media being sent) is a pretty decent task.

While the main task is to primarily send an email to a destination of the user’s choice, the project can be extended much beyond that. One can add the feature of the creation and storage of drafts for sending them later. And of course, the project becomes a bit more challenging if you need to deal with multimedia as part of the email body as well.

11) Student Management System

This might be something that most people already have seen in their daily lives. You see your teacher recording your attendance on a sheet, putting in feedback, uploading assignments, etc. Combine everything, and everything should be part of one sweet project to add to your portfolio!

A project as big as this should have its functionality split into three main parts depending on the type of user (which is identified at the time of authentication). These users include:

• Students: Students are designed to be consumers. They log in to access their data, download assignments, upload solutions and projects, respond to feedback provided, and so on.
• Teachers: Teachers are designed to be providers. They log in to provide details about students like feedback, update attendance, communicate with the students, upload assignments, and so on.
• Administrator: Administrators are designed to be the hierarchical elements that form the interconnecting bridge between teachers and students. They are the masters of the system; creating and editing account details, managing the mass inflow of information, checking the status of any submissions, and so on.

This project can be highly customizable and only gets more vibrant once more features are added to improve it. The more, the better.

12) Airline Reservation System

One of the best ways to try out the concepts of OOPs for yourself is with this project, probably. We have seen everyday systems where we make reservations or cancellations for flights, haven’t we?

Designing a similar system as a project can be a very good way to add to the resume! The system should be a web-based one allowing all sorts of functionality that a normal reservation system would have fulfilled.

One should be able to make reservations on certain flights after filling in the requisite data. Reservations should be saved somewhere so that they can be accessed again later for a particular user. One should also be able to cancel reservations provided the reservation to be canceled exists, else an error should be displayed.

This project is a thorough test of your database skills as well, as it requires a lot of data to be dumped and fetched at all times.

13) Food Ordering System

We have all eaten out at restaurants or ordered from outside. It takes a long time for the order to be taken and for our food (and later, our bill) to be delivered, right? One piece of well-designed software can help minimize queue times a lot and thus help increase the number of customers served per day.

The main functionality is to allow the user to order food and send it to the particular restaurant for which the order is being taken and show the user their bill. A sophisticated UI and other small features go a long way in improving this project.

14) Text-based RPG (role-playing game)

This might probably be one of the coolest things that one can build if they have decided to venture into Java. The idea is to allow the user to navigate their path in a video-game-based setting. The only concept is that users have to choose their next move at every point in the game.

Depending on the outcome of the move, the next choice is presented continuously till one of the conditions to end the game is triggered, which shows the score of the player and how long they survived.

This project is one of the best suggestions for people to start with, as it has less to nothing to implement, yet can be surprisingly complex to deal with. Think your basics about branching instructions and decision-making statements are good enough? This is one sure-shot way to put it to the test.

The flexibility of this project means that one can design the story of this game and its decisions and outcomes in multiple ways possible. It’s totally up to the user as to how they want to proceed with it.

15) Media Player Application

Java is a language of many merits, including the ability to deal with all types of files. We all have used some sort of media player to listen to songs or watch movies, haven’t we? Designing and creating one such media player is going to be tough, but is something that one can take up if one wants to explore more of the Java language.

A media player application may require extensive Java knowledge before it is successfully made, but it can be very rewarding to figure out how to build one. That is why it is an interesting Java project for new programmers.

This is, again, one of the projects that are extremely flexible by nature. Both an Android application and a desktop application can be designed to work as a media player. There’s also a choice to make it play only audio, or play both audio and video (in synchronization!).

Showing details of the video or audio being played as well as the ability to make playlists should also be something up the to-do list as well.

(Note that this project might take some time to implement as it involves a deep understanding of multithreading as well as file handling).

16) Currency Converter

A very basic Java beginner project that is used to convert a currency from one to another. It has a web-based interface you need to just enter the amount, and the currency to which you want to transform, click enter and you get the output.

The real-life use case for this application is many people use this application basically for business, shares, and finance-related areas where the exchange of currency and money transfer happens daily. You can add multiple currencies by adding the corresponding countries with their current exchange prices in the market.

It is a calculator-type application that is developed using the Ajax, Applet, and web features of Java servlets.

17) Brick Breaker Game

Game applications are the ones that can make your understanding of the Java project better and you would be able to see the essential animation techniques with their integration and can easily experience them. Though this Java project might not be easy for you. Let's understand what this game is about.

This game has a small ball and a small platform at the base and the small ball knocks the bricks taking the help of this small platform at the base. The control of this base is given to the player and the player tries to bounce the ball with this platform.

The number of bricks broken by the ball is the same number of points you scored. i.e., the more you destroy the bricks, the more you score. 

If the ball doesn't bounce by the platform then the player will lose the game. This project is beginner-friendly, and one might use this project in their first-year projects list or can experience the implementation for fun purposes. 

18) Number Guessing Game

It's a very easy game to develop as a Java Developer and easy to understand as well. The only functionality provided by this application is there will be a range of numbers specified to the users, and users have to just guess the number.

If the number guessed is correct, then the player wins, else loses. You can restrict the count of guessing the numbers for the users to make this more interesting and fun. 

This is a web-based application where there will be an input provided to the user and they to just guess the number in the given range and a time clock will be there. If the guessed number is correct: the player Wins ! or Loses!

If the guess value is close to the correct value, you might provide the user with a pop-up of too-close value! You need to know about Random Class in Java to make this game.

19) Tic-Tac-Toe Game

It's a very famous game that you all must be aware of. It is developed using GUI (Graphical User Interface) in Java. Players generally prefer this kind of game when they’re bored and want something to play that is quick and easy. 

This game application has a 3x3 box displayed on the screen. The first person who starts the game has to enter either X or O for any one box, followed by the other player entering the other X or O. This continues unless any one of them gets a line cut either diagonally or straight. And the person who finds the line is the winner of the game. 

But you first need to have an understanding of Java Swing, Java GUI (Graphical User Interface), and JFrame.

20) Word Counter 

This application tells you the exact number of words used in the pasted paragraph by the user in the input. A simple project for beginners is good to start. It can be built using Swing in Java. This is a counting-word application Java-based project.

Remember, our childhood days when we were asked to write an essay on a given topic where the word length should be 500 or 1000? This application comes with a feature that could help you.

You can further add functionalities like showcasing the number of characters, words, and paragraphs it has. Also, it is completely free to use and there’s no word count limit. 

21) Online Quiz Platform

An online quiz platform can be built in Java that helps us access a diverse range of quizzes on various subjects and topics. The platform offers an interactive interface where we can select quizzes, attempt questions, receive instant feedback, and track their progress.

We can add the following features to this quiz platform:

• User Authentication: Users can create accounts, log in securely, and access quizzes based on their preferences.
• Quiz Selection: Users can choose quizzes from multiple categories such as science, mathematics, history, etc.
• Interactive Quiz Interface : Engaging user interface for displaying questions, multiple-choice answers, and providing immediate feedback.
• Scoring and Progress Tracking: Users can view their scores, track their progress, and review past quiz attempts.
• Admin Panel: Administrators can manage quizzes, add new questions, and analyze user statistics.

22) Health and Fitness Tracker

In today’s age when everyone is concerned too much about their health, a Health and Fitness Tracker can be developed in Java that serves as an invaluable tool for individuals striving for a healthier lifestyle.

The Health and Fitness Tracker is a Java-based application designed to assist users in monitoring their daily activities, nutritional intake, and overall fitness progress. It offers a comprehensive dashboard where users can input data and track their health goals.

It can help us in many ways, like:

• Personalized Health Monitoring: Users can tailor the tracker to their specific health needs and goals.
• Motivation and Accountability: The visual representation of progress serves as motivation to stay committed to a healthy lifestyle.
• Data-Driven Insights: Analyze tracked data to gain insights into habits, patterns, and areas for improvement.

23) Appointment Scheduler

Efficiently managing appointments and schedules is essential in various fields, from healthcare to business. An Appointment Scheduler developed in Java can streamline the process, ensuring organized and optimized time management.

The Appointment Scheduler application in Java provides a user-friendly platform for scheduling and managing appointments. It caters to various industries where appointment booking and management are critical.

We can implement this in simple steps:

• User Authentication and Role Management: Use frameworks like Spring Security for authentication and authorization. Implement different user roles (admin, staff, clients/customers).
• Database Setup: Use MySQL or PostgreSQL to store user details, appointment schedules, and related data.
• Utilize JavaFX for a visually appealing calendar view.
• Implement functionalities to schedule appointments and display them in the calendar.
• Search and Filter Functionality: Implement features for users to search for available slots based on date/time or service type.

24) Online Auction System

Online auctions have transformed commerce by providing a platform for buying and selling goods. Developing an Online Auction System using Java enables users to engage in exciting bidding experiences. The Online Auction System in Java offers a virtual marketplace where users can bid on items, sellers can list products, and an auctioneer manages the bidding process.

The following features can be implemented in this application:

• User Registration and Authentication: Secure login/signup for buyers, sellers, and admin roles.
• Product Listings: Sellers can add products with descriptions, images, and starting bid prices.
• Bidding Mechanism: Buyers can place bids, receive notifications on higher bids, and track auction progress.
• Auction Management: Admin panel to oversee auctions, close/open bidding, and manage listings.
• Payment Integration: Integration with payment gateways for secure transactions.
• Feedback and Rating : Users can leave feedback and rate sellers/buyers after successful transactions.

25) Language Learning App

Learning a new language opens doors to new cultures and opportunities. A Language Learning App developed in Java provides an interactive platform for users to master a new language.

The Language Learning App offers a user-friendly interface with various tools and exercises to aid users in language acquisition.

We can follow the below steps to implement it:

• User Registration and Profile Creation: Allow users to register and create profiles, select their target language, and set learning goals.
• Design structured lessons covering vocabulary, grammar, listening, speaking, and writing exercises.
• Create interactive quizzes to assess language proficiency.
• Implement speech recognition features for pronunciation practice.
• Set up community forums for users to interact and practice language skills.
• Implement a system to track user progress with stats and achievements.
• Utilize MySQL or SQLite for database management.
• Develop backend functionalities for user data storage and retrieval.

Which Projects are Best for New Programmers?

It’s a lot of projects, isn’t it? That should be enough to get started with. Of course, even among these projects, some are easier than others. Like always, it’s wise to build stepping stones while learning any language. The mantra is to get started with the easier projects, and then move on to bigger and better ones as one’s understanding of the language improves.

The recommendation for new programmers making a project for the first time is to get started with the projects like the temperature converter, the digital clock, the link shortener, or the memory game . These are the most simple Java project ideas for beginners.

They have pretty straightforward requirements and don’t require a huge amount of time to build or code. Once the beginner projects are pretty much done and dusted, it’s time to move on to slightly bigger and better stuff.

The intermediate projects include stuff like the chatting application, the text-based role-playing game, the supermarket billing software, or the email client software. These projects are slightly more complex and require some time investment before they can be completed.

Projects like the Online quiz platform, appointment scheduler, electricity billing system, or the student management system can be done next. These have requirements that are mostly tailored for different situations, hence it might require some research.

However, if you face problems with any of the above projects, or you need Java homework help , our experts are always ready to help you.

However good of a programmer you are, no one will be convinced about your skills unless you can show off a practical demonstration of the same. Nothing’s better than getting started with a few simple Java projects for beginners to show that you have some hold over the implementation of real-world applications.

Remember, it’s much more difficult to break into the programming world if you don’t have practical experience in coding. Coding a few Java practice projects helps mitigate this, and opens the doors for employment!

Frequently Asked Questions (FAQs)

1) what are some good java projects.

If you are a beginner then you can start with some Java projects like Bank Management Software, Electricity Billing System, Temperature Converter, and Supermarket Billing Software. We can also build a Digital Clock, Quizzing App, Email-Client Software, Student Management System, Airline Management System, or Food Ordering System.

2) Why do we need to build Java projects?

Projects are important for developing core Java skills and it also helps to shine your resume. If you are a beginner, projects are a way to show that you understand the underlying concepts of the programming language and are ready to apply them to solve real-world problems.

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About The Author

Arkadyuti Bandyopadhyay

More by favtutor blogs, monte carlo simulations in r (with examples), aarthi juryala.

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Top 15 Java Projects With Source Code [2023]

Introduction, why these projects, java projects for beginners, 1. password generator using java, 2. online survey system, 3. online resume builder, 4. snake game using java, intermediate java projects with source code, 5. data visualization software, 6. electricity billing system, 7. web medical management system, 8. supply chain management system, 9. exam seating arrangement system in java, 10. wordcount tools in java, core java projects with source code, 11. create a consumer relationship management system, 12. bfit cognitive and memory testing game, 13. network packet sniffer analyzer software, 14. internet service provider automation system, 15. create a criminal face detection system, 1. what kind of projects is java used for, 2. where can i get java projects, 3. is java worth learning in 2023, additional resources.

“Our world, moved by Java”, Take a moment to contemplate this phrase. Java is one of the most commonly used programming languages. It is also used as the server-side language for most of the back-end development tasks, like those concerning Android development and Big Data. Java is also used for desktop computing, other mobile computing, games, and numerical computing. The popularity of Java is further evidenced by 90 per cent of all Fortune 500 companies using Java. In this article, we’ll be looking at 15+ exciting Java project ideas/topics for you to explore and practice.

Any layman can be a good developer, no matter if you possess a certain gene code to accomplish this or not. That being said, putting in the effort and harbouring the correct mindset is inevitable to accomplish this. Creating Java projects will assist you to hone your skills on real-life projects and amplify your spirit as a developer. This is the sole way to know if you own a pragmatic grasp of the theory you’ve learned. Functioning on these Java projects will let you equip yourself for a job.

The theoretical knowledge that you have is not of utmost importance, employers are interested in how you are able to translate the knowledge in a practical setup. You should create a portfolio of the tasks you have accomplished so far. So, when you interview for the role of developer, you will have solutions, code, apps, and projects, to exhibit to the recruiters. The portfolio will emphasize your strong points and recognize flaws that need modification.

Confused about your next job?

Reasons why software companies choose Java for developing enterprise applications:

• The software industry adopted Java as it made development a pleasure, resolved problems with distribution, and lessened the pang of continuously porting across platforms.
• As Java is an object-oriented language, it is huge and secure. Java programs are composed independently of the platform in bytecode language, which lets the same program work on any machine that is equipped with JVM. It is a realistic and practical approach to software design. Java objects envelop data and behaviour so that code can be used again, thereby making the process of testing and troubleshooting easier.
• Java’s popularity grew when people learned how Java could solve their hardships on servers – making productivity, execution, and scalability reach new levels.
• Java has demonstrated its supremacy over other languages from server-side scaling of multi-tier architecture to internet distribution of software, to the cloud-native deployments, to taking benefit of continuously upgrading hardware architectures and a whole lot more.

Here’s a list of ideas for beginners to try with Java

With the growing trend of hacking attacks, everyone should create different and complex passwords for their diverse accounts to keep them secure. Remembering every password is not humanly possible and noting it down somewhere is not a wise idea. Hence, people take the help of Password generators to create strong and complex passwords for their accounts. To generate such functionality all by yourself, you can take advantage of the function that java offers. Whenever a user is developing an account on a new website, you can use that program to develop a password. To take the safety of the password a notch above, you can enforce such functionality so that it saves passwords in encrypted form. To incorporate this, you need to study the fundamentals of Cryptography and Java Cryptography Architecture.

The idea of this project is to create a core java project that can accumulate the viewpoint of a targeted audience of a survey through the Internet. Based on that, the app can send the targeted audiences promotional emails and can launch online surveys. Any business can make use of this type of software to assemble feedback regarding the services or products they offer. We can build such functionality so that only registered customers can cast their responses. The main attributes of the app should be:

• The apps are programmed in a way that they should be compatible with various databases like SQL and NoSQL.
• Customers can submit their reactions anonymously.
• Should be installed at a doable cost.

People find it challenging to build their resumes. The concept of this java project is to make this process smooth for the customer. The project streamlines the job of designing a resume for an individual.

We can choose a few industry-accepted, well-crafted resume templates, and request the user to incorporate the details he/she wants to add to the resume. After imputing all the necessary information, a personalized resume can be rendered in pdf and doc format by selecting a single button. The app should own the following features:

• Engaging resume template.
• Update each piece of information as per the user’s needs.
• It should have the functionality to publish the resume instantly.

In our childhood, nearly all of us enjoyed playing classic snake games. Now we will try to enhance it with the help of Java concepts. The concept appears to be easy but it is not that effortless to implement.

One ought to comprehend the OOPs concept in detail to execute this effectively. Furthermore, ideas from Java Swing are used to create this application. The application should comprise the following functionalities:

• The Snake will have the ability to move in all four directions.
• The snake’s length grows as it eats food.
• When the snake crosses itself or strikes the perimeter of the box, the game is marked over.
• Food is always given at different positions.

Data visualization is a key part of the state-of-the-art business led by Data Science, Business Analytics, and Business Intelligence. It indicates the visual depiction of data in a pictorial arrangement. This is a powerful java project for apprentices. This information representation project is tied in with providing a synopsis of the plan and usage guidelines in information perception. The destinations of this task are to give clear and compelling correspondence of the experiences wrapped up in the information via appropriate graphical or pictorial depictions.

It depicts the hub availability in systems administration as information visualization. You can use a mouse or a trackpad to find it in different areas. The most useful part about the task is that you can enhance and modify the product highlights and capacities as demonstrated by your prerequisites.

This java project is a contemporary take on the classic electricity billing system where a person gathers data from our electricity meter. The primary objective of this project is to automate the entire process to make it seamless, convenient, and effective. The software can compute the bill amount on the basis of units of electricity consumed in a month. Electricity Billing System is considered one of the best java project ideas for beginners. The app should have the below-mentioned features:

• Accurately calculate the bill amount.
• Instantaneous sharing of data between local electricity offices and users.
• Extremely safe to negate the chances of tampering.

The undertaking is called a “Virtual Medicine Home.” By using this application, patients can reserve online meetings with their preferred specialists. Specialists can recommend medical services, e-remedy, and consider the patient’s clinical records, lab reports, and many more. The app also lets users explore and interface with individuals who are donating their organs or blood. During the times of the pandemic, when it gets dangerous to visit the hospital, this JAVA project comes to your rescue. The application comes with two modules — an Admin and a Doctor module. The Admin module is responsible for the online programming framework, and the Doctor module allows specialists to communicate with patients.

This venture implies smoothening the inventory network cycle by religiously keeping the sellers and customers in check and always following the items via the different focuses in the inventory network. By using this application, the clients can directly pass on their item prerequisites to the maker, who at that moment reaches various merchants to obtain the basic assets for making the item. Per the items given to them, the vendors as a rule make a rundown of things, post which the maker selects the materials that best serve the particulars provided by the client. The selected rundown of items is sent to the stock division for handling, and then the assembling starts. When the creation is completed, the records office establishes the crude materials’ expenses and the expense of gathering to generate the full bill. Lastly, the item with the receipt is sent to the customer.

This easy java project strives at building an automated seating arrangement of students for exams, on the basis of different inputs.

There are primarily two entities, the admin and the student. Both entities can log in and register to the system, and check and access the system as per the approval granted to them. The admin can see all the relevant details of the students and provide input to the system taking into consideration the need like the branch, semester, year, and subject of the student. Admin will input details like the total number of students, available classes with the number of seats, etc. After gathering all this information the system will generate a seating arrangement based on the row number and the students’ roll number.

This is another Java Project that is very helpful for engineering students to improve their learning in the File and String Handling concepts of Java. The programmer develops an interface on which customers can document their content and then obtain the total words in the content. The programmer strategies and saves the content in a file for the purpose of processing and then processes the content by String class to calculate the words. There are different choices that the programmer creates to make the project more creative and intriguing. You can also employ the Java APIs of formatting to format the content delivered by the client.

This evolved Java project needs refined mastery in Java database connectivity, MySQL, HTTP, and JSpring framework. You ought to learn Spring core/MVC, ORM framework, and Hibernate to accomplish this project. You will develop a management system for the web platform that will let community managers revise and access consumer data for more satisfactory consumer relations. This project utilizes the Spring framework and offers the source sets for Java programming.

If you wish to be an Android developer, incorporating Java Android development application projects into your resume is highly advantageous. This project is an online brain exercise game, which experiments with your memory and cognitive skills. To create this application, you will put up the user interface, implement game logic, make a splash screen, build a game guide, and arrange the game screens. You will also have to develop an APK for the app’s release. The last step includes an automatic data processing scoreboard in the app that keeps a track of the player’s answers.

If you are curious about the system and network administration profession, then this project might benefit you. The objectives of this project are to develop system security rules and put up network packet sniffer analyzer software for the purpose of system monitoring. You will construct a packet sniffer that comprises elements like 24/7 monitoring, solving network problems, packet decoding, protocol analysis, and storing real-time data. It comes with modules like statistics, packet analysis, and a user interface module.

This ISP (internet service provider) project needs you to build a system that delivers automated troubleshooting, and error messages to the consumer. The project also needs you to link the communication systems between the server and the ISP. It comprises four automation modules like the user login module, hardware and software modules, the service module, and a connection module. You will have to use Java technology, and J2EE to create this system.

If you are interested in face detection applications, then this project is meant for you. This project comprises eyewitness, investigator, and admin modules and needs you to create an effective image detection system. You will input sliced image data into the system and facilitate the instantaneous viewing feature on it.

To conclude, these are a few of the most-recommended Java projects that you can use to design as per your mastery and convenience. The projects will hone your programming skills and will prepare you for the tech industry by providing beneficial exposure. There are a bunch of other project ideas that one can incorporate with the help of Java. In this article, we have shed some light on the amazing Java project ideas for students who have started their journey with java as well as experts who are well versed with such projects. If you are an amateur, start with the fundamental projects, then slowly shift towards complex projects as you obtain knowledge in Java. Working on various projects is the best way to comprehend how things operate in real life, what hurdles that cross the path while creating an application, how to deal with those challenges, etc. Selecting a project that demonstrates the talents required for the specific job you are looking for will help you stand out to your potential employer.

Ans. Java is mainly utilized as the server-side language for back-end development projects, including big data and Android development.

Ans. One can download all the major java projects in Eclipse, Myeclipse, and Netbeans IDE’s.

Ans. Yes, as the world is racing towards mobile apps and convenience, Java has become more and more necessary as a language. It’s one of the strongest languages in today’s time.

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Java Tutorial

This Java Tutorial is designed for beginners as well as experienced professionals. Whether you’re starting your Java journey and looking to understand the basics of Java or its advanced concepts, this free Java tutorial is the perfect resource for you.

What is Java?

Developed by Sun Microsystems in 1995, Java is a highly popular, object-oriented programming language. This platform independent programming language is utilized for Android development, web development, artificial intelligence, cloud applications, and much more.

In this tutorial, we will cover everything from the basics of Java syntax to advanced topics like object-oriented programming and exception handling. So, by the end of this tutorial, you will have a strong understanding of Java and be ready to start writing your own Java applications. So let’s get started on this comprehensive Free Java programming course !

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Overview of Java

Basics of java, input/output in java, flow control in java, operators in java, arrays in java, strings in java, oops in java, classes of java, interfaces in java, methods in java, packages in java, collection framework in java, collection classes in java, memory allocation in java, exception handling in java, multithreading in java, synchronization in java, file handling in java, java networking, java se 8 features, java date & time, java miscellaneous, interview questions on java, java practice problems, java jobs & opportunity, get started with free java tutorial.

Here in this section, you will find all the free resources that you need to become zero to mastery in the process of learning Java programming language .

• Introduction to Java
• History of Java
• Java vs C++ vs Python
• How to Download and Install Java?
• Setting Up the Environment in Java
• How to Download and Install Eclipse on Windows?
• Java Development Kit (JDK) in Java
• JVM and its architecture
• JDK Vs JRE Vs JVM
• Just In Time Compiler
• Byte Code Vs Machine Code
• Java Basic Syntax
• First Java Program (Hello World)
• Datatypes in Java
• Primitive Vs Non-Primitive Datatypes
• Java Identifiers
• Java Variables
• Java Keywords
• Scope of Variables
• Wrapper Classes in Java
• How to take Input from users in Java
• Scanner class in Java
• BufferedReader class in Java
• Scanner vs BufferedReader in Java
• Ways to Read Input from Console in Java
• Print Output in Java
• print() Vs println() in Java
• Formatted Outputs in Java
• Decision making in Java
• If Statement in Java
• If-Else Statement in java
• If-Else-If ladder in Java
• Loops in Java
• Do while loop
• For each loop
• Continue Statement in java
• Break Statement In Java
• Usage of Break in Java
• Return Statement in Java
• Arithmetic Operator
• Unary Operator
• Assignment Operator
• Relational Operator
• Logical Operator
• Ternary Operator
• Bitwise Operator
• Introduction to Arrays in Java
• Arrays class in Java
• Multi-Dimensional Array in Java
• How to declare and initialize 2D arrays in Java
• Jagged array in Java
• Final Arrays in Java
• Reflect Arrays in Java
• Java util.Arrays Vs reflect.Arrays
• Java Array Programs
• Introduction of Strings in Java
• String class in Java Set-1 | Set-2
• Why strings are immutable in Java?
• StringBuffer class in Java
• StringBuilder class in Java
• Strings vs StringBuffer vs StringBuilder in Java
• StringTokenizer class in Java Set-1 | Set-2
• StringJoiner in Java
• Java String Programs

OOPS in Java refers to Object-Oriented Programming concepts implemented in the Java programming language. Java’s OOP features include classes, objects, inheritance, polymorphism, and encapsulation, enabling modular and efficient code development. Understanding OOPS in Java is essential for building robust, scalable, and maintainable software applications.

• OOPS Concept in Java
• Why Java is not a purely Object-Oriented Language?
• Classes and Objects
• Naming Convention in Java
• Access Modifiers in Java
• Constructors in Java
• Four pillars of OOPS in Java
• Inheritance in Java
• Abstraction in Java
• Encapsulation in Java
• Polymorphism in Java
• This reference in Java

Classes in Java are the blueprint for creating objects and defining their properties and behaviors. They are the fundamental building blocks of Java programs, enabling the creation of reusable and modular code. Classes can contain fields, methods, constructors, and nested classes, providing a wide range of functionality and flexibility.

• Understanding classes and objects in Java
• Class vs interface
• Singleton class in java
• Object class in java
• Inner class in java
• Abstract classes in java
• Throwable class in java

Interfaces in Java are abstract types that define a set of methods that a class must implement. They provide a way to achieve abstraction, multiple inheritance, and loose coupling in Java programs. Interfaces are useful for defining common behaviors and functionalities that can be shared across different classes, leading to more modular and reusable code. Mastering interfaces in Java is crucial for building flexible and extensible software applications.

• Java Interfaces
• Interfaces and Inheritance in Java
• Class Vs Interface in Java
• Functional Interface
• Nested Interface
• Marker Interface
• Comparator Interface
• Introduction to methods in Java
• Different method calls in Java
• Static methods Vs Instance methods in Java
• Abstract methods in Java
• Method Overriding in Java
• Method Overloading in Java
• Method Overloading Vs Method Overriding
• Java Packages
• How to create a package in Java
• java.util package
• java.lang package
• java.io package
• Java Collection Framework
• Collections class in Java
• Collection Interface in Java
• List Interface in Java
• Queue Interface in Java
• Map Interface in Java
• Set Interface in Java
• SortedSet Interface in Java
• Deque Interface in Java
• Comparator in Java
• Comparator Vs Comparable in Java
• Iterator in Java
• ArrayList in Java
• Vector class in Java
• Stack class in Java
• LinkedList in Java
• Priority Queue in Java
• HashMap in Java
• LinkedHashMap in Java
• Dictionary in Java
• HashTable in Java
• HashSet in Java
• TreeSet in Java
• LinkedHashSet in Java
• Java Memory Management
• How are Java objects stored in memory
• Stack vs Heap memory allocation
• Types of memory areas allocated by JVM
• Garbage Collection in Java
• Heap and Stack memory allocation
• Types of JVM Garbage Collectors in Java
• Memory leaks in Java
• Java Virtual Machine(JVM) Stack Area
• Exceptions in java
• Types of Exceptions
• Checked Vs Unchecked Exceptions
• Try, Catch, Finally, throw, and throws
• Flow control in Try catch block
• Throw vs Throws
• Final vs Finally vs Finalize
• User-defined custom exception
• Chained Exceptions
• Null pointer Exceptions
• Exception handling with method Overriding
• Introduction to Multithreading in Java
• Lifecycle and Stages of a Thread
• Thread Priority in Java
• Main Thread in Java
• Thread class
• Runnable interface
• How to name a thread
• start() method in thread
• run() vs start() Method in Java
• sleep() method
• Daemon thread
• Thread Pool in Java
• Thread Group in Java
• Thread Safety in Java
• ShutdownHook
• Multithreading Tutorial
• Java Synchronization
• Importance of Thread synchronization in Java
• Method and Block Synchronization in Java
• Local frameworks vs thread synchronization
• Atomic Vs Volatile in Java
• Atomic Vs Synchronized in Java
• Deadlock in Multithreading
• Deadlock Prevention and Avoidance
• Lock Vs Monitor in Concurrency
• Reentrant Lock
• File Class in java
• How to create files in java
• How to read files in java
• How to write on files in java
• How to delete a file in java
• File Permissions
• File Writer
• FileDescriptor class
• RandomAccessFile class
• Introduction to Java Regex
• How to write Regex expressions
• Matcher class
• Pattern class
• Quantifiers
• Character class
• Introduction to Java IO
• Reader Class
• Writer Class
• FileInput stream
• File Output stream
• BufferedReader Input Stream
• BufferedReader Output stream
• BufferedReader vs Scanner
• Fast I/O in Java
• Introduction to Java Networking
• TCP architecture
• UDP architecture
• IPV4 Vs IPV6
• Connection-oriented Vs connectionless protocols
• Socket programming in Java
• Server Socket class
• URL class and methods
• Lambda Expressions
• Streams API
• New Date/Time API
• Default Methods
• Functional Interfaces
• Method references
• Optional class
• Stream Filter
• Type Annotations
• String Joiner
• Date Class in Java
• Methods of the Date class
• Java Current Date and time
• Compare dates in Java
• Introduction to Java JDBC
• JDBC Driver
• JDBC Connection
• Types of Statements in JDBC
• JDBC Tutorial
• Introduction to Reflection API
• Java IO Tutorial
• JavaFX Tutorial
• How to Run Java RMI application?
• Java 17 New Features
• Core Java Interview Questions
• Java Multiple Choice Questions

Features of Java

• Java has been one of the most popular programming languages for many years.
• Java is Object Oriented. However, it is not considered as pure object-oriented as it provides support for primitive data types (like int, char, etc)
• The Java codes are first compiled into byte code (machine-independent code). Then the byte code runs on Java Virtual Machine (JVM) regardless of the underlying architecture.
• Java syntax is similar to C/C++. But Java does not provide low-level programming functionalities like pointers. Also, Java codes are always written in the form of classes and objects.
• Java is used in all kinds of applications like Mobile Applications (Android is Java-based), desktop applications, web applications, client-server applications, enterprise applications, and many more.
• When compared with C++, Java codes are generally more maintainable because Java does not allow many things which may lead to bad/inefficient programming if used incorrectly. For example, non-primitives are always references in Java. So we cannot pass large objects (like we can do in C++) to functions, we always pass references in Java. One more example, since there are no pointers, bad memory access is also not possible.
• When compared with Python, Java kind of fits between C++ and Python. The programs are written in Java typically run faster than corresponding Python programs and slower than C++. Like C++, Java does static type checking, but Python does not.

Applications of Java

Here in this section, we have added some of the applications that were developed using the Java programming language.

• Mobile Applications
• Desktop GUI Applications
• Artificial intelligence
• Scientific Applications
• Cloud Applications
• Embedded Systems
• Gaming Applications

Keep up your pace and try hard till you excel in it. This will need some motivation and resources to Practice Java. So, there are few resources mentioned below this will help you in your journey:

Java Interview Questions and Answers Java Programming Examples Java Exercises – Basic to Advanced Java Practice Programs with Solutions Java Language MCQs with Answers Java Practice Quiz

According to report of Statista.com Java is most demanded programming languages after JavaScript by recruiters worldwide in 2024. Major MNC companies are recruiting Java Programmers.

• Deloitte India
• Many more…

Java Latest & Upcoming Features

Java SE 21 Released: September 2023 Java SE 21 is the latest stable release, featuring:

• Hidden Classes (Preview): Introduces a mechanism to restrict access to specific members of a class, enhancing modularity and code maintainability.
• Improved Garbage Collector Ergonomics (JEP 429): Simplifies configuration and monitoring of the garbage collection process.
• API Updates : Enhancements to existing APIs, including java.io.file for better file handling capabilities.

Java SE 22 Released: March 19, 2024 Java SE 22 introduces:

• Foreign Function & Memory API (JEP 454): Enhances interoperability with native code.
• Unnamed Variables & Patterns (JEP 456): Adds support for unnamed variables and patterns.
• Structured Concurrency (JEP 462, Second Preview): Simplifies multithreaded programming by structuring concurrency.
• String Templates (JEP 459, Second Preview): Provides a new syntax for creating and manipulating strings.
• Vector API (JEP 460, Seventh Incubator): Offers a portable and low-level abstraction for SIMD programming.

Upcoming Features (Expected in Java SE 23 – September 2024)

• Vector API (Incubator): A new API designed for high-performance vector computations, potentially beneficial for scientific computing and machine learning applications.
• Project Panama (Preview): Aims to improve interoperability between Java and native code, simplifying interactions with non-Java libraries and frameworks.

Trends in Java Development:

• Java continues to prioritize features that enhance application performance and developer experience.
• Java’s strong position in cloud environments is expected to hold as cloud computing remains a dominant trend.
• Java’s suitability for building scalable and modular systems aligns well with the popularity of microservices architectures.
• Expect to see Java evolving to integrate more seamlessly with technologies like artificial intelligence, big data, and the Internet of Things (IoT).

Java Programming Tutorial: FAQs

Why use java .

Java is simple to understand programming language because doesn’t contain concepts like : Pointers and operator overloading and it is secure and portable.

What are the major concepts in Java?

There are 4 major concept in Java that is abstraction, encapsulation, polymorphism, and inheritance. Along with this Java also works with three OOPs concept

How Java different to C++ ?

Why Java is so popular programming language?

Java is based on object model hence it is one the popular programming language.

What are the scope of Java Technologies for Web Applications?

Java Technologies for Web Applications are a set of Java-based technologies that are used to develop web applications. These technologies include: Java Servlet API JavaServer Pages JavaServer Faces Enterprise JavaBeans JDBC (Java Database Connectivity) Java Messaging Service (JMS): JavaMail API: JAX-WS

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Here are 11 public repositories matching this topic..., abhinav-26 / employee-management-system.

This repository consists of Java Program for Employee Management System.

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☕️ Some Java Exercises which involves concepts of java.

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Java Mock Test Semester 2 , GEHU

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Developer Mr.Tayyab MuGhal

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