Top 12 Java Project Ideas for Beginners to Professionals

Relia Software

Relia Software

Quang Duc

Relia Software


12 Java project ideas for beginners to experts are attendance management system, number-guessing game, currency converter, Java job portal, email system, etc.

java project ideas

Table of Contents

 The field of software development is constantly evolving, necessitating developers to acquire new tools and surpass their boundaries. Java is a robust and versatile programming language that provides development with the necessary tools to create new applications. However, individuals aspiring to enhance their skills and tackle more challenges must engage in more intricate Java projects. 

This blog will inform you of 12 popular Java projects for developers of all levels from beginners to professionals. Check it out!

Java Project Ideas for Beginner-Level

Attendance Management System

This application, often known as an attendance tracking or sign-in system, allows users to monitor attendance at meetings, classes, or events. Users can often construct an attendee list, indicate their presence status, and generate attendance reports that summarise attendance data.

Additionally, you can save attendance data in files, add a GUI for a more professional look, and possibly integrate a database for managing larger datasets of attendees and attendance records when developing further.

Tech Stack Required: Java, Scanner Class (Java API)


  • Data Management: Store attendance data in files for easier record-keeping. This could require leveraging Java file-handling functions or a database for complex applications.
  • Add Attendees: Add and manage attendees list. This may include adding, modifying, and deleting attendees.
  • Mark Attendance: Add absent or present functionality. A text-based input or checkbox system for a graphic interface could be used.
  • Reports: Create simple and advanced attendance reports. You could use attendance trend reports or individual attendance data.
attendance check feature
Attendance Management System (Source: Internet)

Number Guessing Game

This basic yet fun logic game requires the player to predict a computer-generated random number within a certain guessing range. The user receives indications like "higher" or "lower" to assist them guess the secret number. This interactive game teaches Java programming basics.

Java variables, data types (integers), user input, conditional statements (if/else), and loops (while loop for repeated user guesses) are covered in this project. You can improve the game by altering the guessing range and adding various difficulty levels as you progress.

Tech Stack Required: Java, Math. random() method & Scanner Class


  • Game logic: Use Math. random() to generate a guessing range-specific integer. Ask the user to guess the number using the Scanner class.
  • Feedback Loop: Use conditional statements to give the user interactive feedback on their guess ("higher" or "lower").
  • Win Condition: Tell the user congratulations when they predict the right amount.
guess number game
Number Guessing Game (Source: Internet)

Currency Converter

This foreign exchange calculator or currency exchange tool lets users convert currencies. Users enter a sum in their selected currency and choose the target currency to convert. The program can retrieve live currency exchange rates using external Java libraries and API development or use fixed rates for a simpler version. After conversion, the target currency is shown.

This project teaches Java variables, data types, user input, conditional expressions, and fundamental math operations. As you proceed, you can improve the application by adding a user-friendly GUI, keeping a list of frequently used currencies for convenience, and using external APIs to retrieve and present historical exchange rate data.

Tech Stack Required: Java, scanner class, external libraries (e.g.,, Open Exchange Rates).


  • User Input: Enter the amount to convert and choose the currencies (e.g., USD to EUR).
  • Currency Exchange Rate: The project can use fixed exchange rates or retrieve real-time exchange rates utilizing Java libraries and APIs for a challenge.
  • Calculation: Use the input value and exchange rate to calculate the converted amount.
  • Output: Show the target currency conversion.
Currency Converter App
Currency Converter (Source: Internet)

Online Resume Builder

This Java project addresses a typical issue for job seekers: developing a professional and impactful resume. This online resume builder makes the resume creation process easier by offering a user-friendly interface and pre-designed, customizable templates.

This project will introduce you to a variety of Java technologies, including databases, web development frameworks, and server deployment.

Tech Stack Required: Java, MySQL Database, JDBC, Java Servlet & JSP, Tomcat Server


  • Pre-made Resume Templates: Select from professionally created resume templates for various employment fields and design preferences.
  • Editable Sections: Add work experience, skills, education, and accomplishments to each resume area.
  • Download Options: Create and download your personalized resume in PDF and Word with one click.
Resume Builder
Resume Builder (Source: Internet)

>> Read more:

Java Project Ideas for Intermediate Level 

Supply Chain Management System

This intermediate Java project builds a supply chain management system for enterprise applications. This system optimizes stakeholder communication and material movement in a complicated network. Working on functions across the supply chain will teach you data management, user roles, and designing a complete system for real-world business scenarios.

Tech Stack Required: Java, JDBC, JSP & HTML, RDBMS (e.g., MySQL, PostgreSQL).


  • Order Management: Customers can use the system to directly send in their order needs. Manufacturers can then source materials from other retailers.
  • Inventory Tracking: The system tracks products along the supply chain, providing real-time inventory levels.
  • Production Management: Based on confirmed orders and the supply of materials, manufacturers can run the production process.
  • Delivery Tracking: Users can track their orders using the system.
  • Reporting & Analytics: Study manufacturing costs, material use, and supply chain efficiency.
SCM system app
Supply Chain Management System (Source: Internet)

Data Visualization Software

Effective insight communication is essential in today's data-driven society. This intermediate Java project builds data visualization software. This software lets users create interactive charts and graphs to comprehend data. This project helps you learn Java data manipulation and visualization libraries. 

Tech Stack Required: Java, data visualization libraries (e.g., JFreeChart, Prefuse, Processing).


  • Chart Types: Histograms (1D/2D), bar charts, line charts, scatter plots, and more can best display your data.
  • Data manipulation: Use filters and transformations to narrow your analysis.
  • Customization: Use color palettes, axis names, and data point annotations to customize charts.
  • Interactive Controls: Let users zoom, pan, and filter data visualizations for deeper investigation.
  • Data Export: Save visualizations as PNG, JPG, or interactive formats for sharing and presentation.
data visualization app
Data Visualization Software (Source: Internet)

Electricity Billing System

This intermediate Java project builds an Electricity Billing System to explore utility administration. This program automates meter reading and billing for efficiency and convenience. This project gives experience with Java data management, user interaction, and utility application development. 

Tech Stack Required: Java, database management system, user interface framework.


  • Metre Reading Integration: Work with smart meters to collect data automatically or manually.
  • Bill Calculation: Use tariff structures and consumption data to calculate power bills.
  • Secure Payment Gateway: To let people pay their bills online, connect to a secure payment gateway.
  • Data Sharing: Allow users and local energy offices to securely share data (per data privacy requirements).
  • Security: Use secure data storage and authentication to protect user data.
Electricity Billing System
Electricity Billing System (Source: Internet)

Java Job Portal 

Build a Java Job Portal to improve your Java skills and explore HR technology. This web service connects candidates and recruiters, facilitating the recruitment process for both parties.

This program teaches you user administration, database interaction, dynamic user interfaces, and security best practices. This project lets you use your Java abilities to create a useful tool for employers seeking top talent and job seekers seeking their ideal careers.

Advanced features can include:

  • Implementing a recommendation engine to match people with relevant job openings based on their abilities and experience.
  • Integrating social media to reach more quality prospects and increase job reach.
  • Add online assessments to evaluate candidate skills and interview scheduling to streamline recruiting.

Tech Stack Required: Java, MVC framework, Database Management System, JPA, and Front-end Technologies (HTML, CSS, JavaScript)


  • Complete User Management: Allow job searchers and employers to register, create profiles, and manage their accounts.
  • Easy Job Posting & Search: Post jobs with detailed descriptions, skills requirements, and filterable parameters. Job seekers can use advanced search criteria to identify relevant openings by keyword, skills, region, and job type.
  • Candidate tracking: Integrate an ATS to simplify applications. This comprises resume submission, application management, and platform-based engagement with candidates.
  • Strong Security: Encrypt resumes, applications, and communication records and employ secure user authentication procedures.
job portal board web
Java Job Portal (Source: Internet)

Java Project Ideas for Advanced Level

Consumer Relationship Management System

This web-based tool helps organizations manage client contacts, strengthen relationships, and grow. This project gives hands-on experience in constructing a scalable and secure CRM system with modern Java technology. Your skills will include user administration, database interaction, web development, and API integration. Further advancements include:

  • A consumer segmentation engine for personalized marketing initiatives.
  • Social media integration for consumer involvement.
  • Creating an account management and support self-service portal.

Tech Stack Required: Java, Spring Framework, Java Database Connectivity, MySQL Database, and HTTP Protocol.


  • Multi-level User Management: Implement a secure user management system with differentiated roles like admins and community managers. Each role has specific functionalities tailored to their responsibilities.
  • Manage Customers: Create, edit, and browse detailed customer profiles. Find customers quickly with database client search. Import and export customer reports in CSV.
  • Easy Contract Management: To make and handle consumer contracts, you can use templates and conditions. User roles and approval levels should affect contract acceptance workflow.
  • Engagement: Organise client events to build relationships. Integrated marketing automation allows targeted event notifications.
  • Real-time Client Notifications: Use APIs to text or email customers about upcoming events, promotions, and important information.
CRM app
Consumer Relationship Management System (Source: Internet)

Bug Tracking System

Even the strictest coding principles might fail in the fast-paced world of software development. Advanced Java developers use issue Tracking Systems to ensure high-quality programs and simplify issue repair. This project covers developing a Bug Tracking System, a must-have for developers.

Building an advanced bug-tracking system lets you practice Java while designing a tool that boosts development team productivity, communication, and software quality.

Tech Stack Required: Java, Spring Boot, Database Management System, and JPA


  • Complete Bug Reporting & Management: Accept bug reports with full descriptions, screenshots, steps to recreate, and severity levels. Project managers can assign bug reports, track their status, and monitor resolution timelines.
  • Advanced Search & Filtering: Help developers and testers find issues by keywords, severity levels, project components, assigned users, or custom fields with comprehensive search and faceted filters.
  • Version Control Integration: Use version control systems like Git to track code changes related to reported defects and streamline bug fixes in the development lifecycle.
  • Code Review Management: Add code review functionality to the bug-tracking system to help developers solve problems.
  • Reporting & Analytics: Track bug trends, error-prone areas, team issue resolution, and project quality with comprehensive reports.
Bug Tracking App
Bug Tracking System (Source: Internet)

Social Networking Site

The social media world changes constantly. Building a Java Social Media Platform lets you contribute to this digital ecosystem and learn cutting-edge technology. This project explores social media development and teaches you how to build interesting online communities.

Building a social media platform with Java teaches many advanced development techniques. You'll learn web application creation, secure user management, database interaction, dynamic and interactive user interfaces, and real-time communication.  

Tech Stack Required: Java, MVC framework, JPA, and front-end technologies.


  • Comprehensive User Management: Allow registration, profile creation, login, and secure authentication. Profiles should allow users to add photographs, bios, and privacy settings.
  • Engaging Social Interaction Features: Include text, image, and video content creation and sharing. Encourage social interaction with commenting, liking, following, and content sharing.
  • CMS: Allow users to edit their content feeds, manage their relationships (friend requests, following lists), and form or join interest-based groups or communities.
  • Personalized User Experience: Use newsfeed algorithms to recommend content based on user interactions and preferences.
  • Location-based Services: Use location to connect nearby users with similar interests.
  • Scalability and Security: For a growing user base, employ design principles and libraries that scale well. Protect user data and avoid security vulnerabilities using strong security measures.
Social Networking Wide
Social Networking Site (Source: Internet)

Email System

Seasoned developers can learn about secure email communication by building a Java Enterprise Email Server. This project gives you the skills to build a strong email system for organizations. 

Java email server development exposes you to several advanced development ideas. Server-side development, secure communication protocols, email data management, and user-friendly email management functions will be covered. This project helps you learn how to build safe, scalable, and feature-rich enterprise apps.

Tech Stack Required: Java, Event Handler, Protocols, JavaMail API, and Security Features


  • Secure Email: Use industry-standard protocols like SMTP and POP3 to send and receive emails securely.
  • Email Management Advancements: Implement inbox management, folder, and label organization, and search tools to help users find emails. And consider adding email scheduling, automatic answers, and out-of-office messages.
  • Spam Filtering: Protect users from unsolicited emails with strong spam filtering and security measures. Add access controls and user authentication to prevent unauthorized access.
  • Scalability & Administration: Prepare the system for a rising user base in an organization. Think about user management, administrator dashboards, and monitoring tools.
Email System App
Email System (Source: Internet)

>> Read more:


Finally, these are some of the best Java project ideas for beginners and professionals in this article. Beginners should start with simple projects and progress to more complicated ones as they learn Java. Working on multiple projects is the greatest method to understand how things work in real life, what obstacles arise while designing an app, and how to overcome them.

If you are going to have a web or mobile applications project based on Java project ideas, do not hesitate to contact us, Relia Software. As one of the professional mobile app development companies, we make scalable, reliable, and easy-to-use MVPs for companies and custom IT solutions for businesses.

>>> Follow and Contact Relia Software for more information!

  • development