Java courses can help you learn object-oriented programming, data structures, exception handling, and multithreading concepts. You can build skills in writing efficient algorithms, debugging code, and developing user interfaces. Many courses introduce tools like Eclipse and IntelliJ IDEA, which are commonly used for coding and testing Java applications, along with frameworks such as Spring and Hibernate that facilitate web development and database management.

Scrimba
Skills you'll gain: HTML and CSS, Mobile Development, Web Applications, ChatGPT, GitHub, Front-End Web Development, Javascript, Application Deployment, Web Development, Version Control, Responsive Web Design, Video Game Development, Cascading Style Sheets (CSS), Artificial Intelligence, User Interface (UI) Design, Computer Programming, Database Application, Machine Learning
Beginner · Course · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Performance Tuning, Hibernate (Java), JUnit
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Jest (JavaScript Testing Framework), Mobile Development, Web Development Tools, Unit Testing, Javascript, React Native, JSON, Package and Software Management, Computer Programming, Node.JS, Object Oriented Programming (OOP), Software Testing, Functional Design
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Test Case, Eclipse (Software), Test Data, Test Automation, Test Execution Engine, Integrated Development Environments, Java
Intermediate · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: C# (Programming Language), Object Oriented Programming (OOP), Microsoft Visual Studio, C++ (Programming Language), Computer Programming, Extensible Markup Language (XML), .NET Framework, Database Management, Java, UI Components, Graphical Tools, Network Model, Data Structures, Image Analysis
Intermediate · Course · 3 - 6 Months

Scrimba
Skills you'll gain: JSON, Event-Driven Programming, Javascript, Mobile Development, Data Structures, Object Oriented Programming (OOP), Web Applications, Programming Principles, Data Storage Technologies, Computer Programming, Data Storage, Front-End Web Development, User Interface (UI), Web Development, Debugging
Beginner · Course · 1 - 3 Months

Skills you'll gain: Test Automation, Test Case, Selenium (Software), Software Testing, Maintainability, Test Data, Debugging, Configuration Management
Advanced · Guided Project · Less Than 2 Hours

Vanderbilt University
Skills you'll gain: Strategic Decision-Making, Strategic Thinking, Generative AI Agents, Procurement, Generative AI, Competitive Intelligence, Due Diligence, Business Research, Data-Driven Decision-Making, Leadership, Market Intelligence, Cross-Functional Collaboration, Technical Consulting, Talent Acquisition, Technology Strategies, Agentic systems, Business Ethics
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Node.JS, API Gateway, MySQL, Restful API, MongoDB, Microservices, API Design, NoSQL, Object-Relational Mapping, Database Design, Relational Databases, Unit Testing, SQL, Databases, Server Side, Application Deployment, Database Management Systems, Javascript, Application Programming Interface (API), Software Documentation
Intermediate · Specialization · 3 - 6 Months

University of California, Davis
Skills you'll gain: jQuery, Javascript and jQuery, UI Components, Scripting, JavaScript Frameworks, Web Applications, HTML and CSS, Javascript, Web Development Tools, Animations, User Interface (UI) Design
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Program Development, C and C++, C++ (Programming Language), Object Oriented Programming (OOP), Computer Programming, Development Environment, Software Development, Computer Science
Beginner · Guided Project · Less Than 2 Hours
Skills you'll gain: Application Security, Open Web Application Security Project (OWASP), Angular, OAuth, Test Driven Development (TDD), Cryptography, Data Validation, Unit Testing, Vue.JS, Data Security, Authentications, HTML and CSS, Encryption, Authorization (Computing), General Data Protection Regulation (GDPR), Web Applications, JavaScript Frameworks, Javascript, Security Strategy, Computer Programming
Beginner · Specialization · 1 - 3 Months