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: Responsive Web Design, JSON, User Interface (UI) Design, Color Theory, Cascading Style Sheets (CSS), User Interface (UI), HTML and CSS, Hypertext Markup Language (HTML), Restful API, Web Content Accessibility Guidelines, Event-Driven Programming, Web Design, Typography, API Design, Web Applications, User Interface and User Experience (UI/UX) Design, Application Programming Interface (API), React.js, Javascript, Web Development
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Eclipse (Software), Data Structures, Video Game Development, Java Programming, Java, UI Components, Programming Principles, Game Design, User Interface (UI), Integrated Development Environments, Development Environment, Program Development
Beginner · Guided Project · Less Than 2 Hours

University of California San Diego
Skills you'll gain: Debugging, Java, Teaching, Java Programming, Computer Programming, Programming Principles, Computational Logic, Computational Thinking, Education Software and Technology, Digital pedagogy
Beginner · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Generative AI Agents, Agentic Workflows, AI Orchestration, LLM Application, OpenAI API, Java Programming, Java, AI Workflows, Agentic systems, Generative AI, Prompt Patterns, Prompt Engineering, AI Integrations, Persona (User Experience), Document Management, Secure Coding, Business Logic, Software Design Documents, Plan Execution, Software Design Patterns
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Selenium (Software), JUnit, HTML and CSS, Test Automation, Hypertext Markup Language (HTML), Software Testing, Web Design and Development, Test Script Development, Test Tools, Web Development, Unit Testing, Software Quality Assurance, Java, Data Structures, Java Programming, Cascading Style Sheets (CSS), Test Execution Engine, Code Reusability, Debugging, Software Design Patterns
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Restful API, Cloud API, Application Programming Interface (API), Postman API Platform, API Design, API Testing, Java Programming, Java, Mobile Development, Apache Maven, Application Development, Data Access, Web Development, Eclipse (Software), Software Design
Intermediate · Guided Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: Model View Controller, Spring Framework, Restful API, Spring Boot, Web Services, Frontend Integration, JSON, YAML, Web Applications, Configuration Management, Angular, Java Programming, Software Architecture, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Software Design Patterns, Software Design, Software Engineering, Application Security, Object Oriented Design, Software Architecture, Software Quality (SQA/SQC), Threat Modeling, Maintainability, Code Coverage, Application Deployment, Continuous Deployment, Continuous Delivery, Software Testing, Continuous Integration, CI/CD, Test Driven Development (TDD), Software Documentation, Build Tools, Technical Documentation
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Spring Framework, JUnit, Application Frameworks, Unit Testing, Java Programming, Enterprise Application Management, Integration Testing, Configuration Management, Development Environment, Extensible Markup Language (XML), Context Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Mobile Development, React Native, Responsive Web Design, Browser Compatibility, HTML and CSS, Cross Platform Development, Hypertext Markup Language (HTML), Web Design, Javascript, Application Development, Application Frameworks, JavaScript Frameworks, Cascading Style Sheets (CSS), Web Development, React.js, UI Components
Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, File I/O, Programming Principles, Computer Programming, Code Reusability, Data Structures, Software Engineering, Program Development, Data Access, Data Persistence, Unit Testing, Debugging, OS Process Management, Performance Tuning
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Role-Based Access Control (RBAC), Postman API Platform, Authentications, Spring Framework, API Testing, Authorization (Computing), Restful API, Identity and Access Management, Secure Coding, Java Programming, Application Design, Spring Boot, User Accounts, Application Programming Interface (API), API Design, Web Applications
Intermediate · Course · 1 - 4 Weeks