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.

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Frontend Integration, Application Programming Interface (API), Restful API, Web Applications, Application Security, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Spring Boot, React.js, Object-Relational Mapping, Restful API, YAML, Data Access, Web Applications, Databases, Application Performance Management, Full-Stack Web Development, Configuration Management, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: C# (Programming Language), Restful API, Unity Engine, Object Oriented Programming (OOP), .NET Framework, C++ (Programming Language), Video Game Development, ASP.NET, Object-Relational Mapping, Software Engineering, Web Services, Application Development, Software Design Patterns, Database Management, Programming Principles, C (Programming Language)
Beginner · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Data Structures, Distributed Computing, Algorithms, Performance Tuning, Functional Design, Machine Learning Algorithms, Performance Testing, Computer Programming
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Test Automation, Test Tools, Unit Testing, Software Testing, Continuous Integration, Performance Testing, Selenium (Software), Quality Assurance, Integration Testing, Test Case, User Acceptance Testing (UAT), IT Automation, Scripting, Debugging, Network Performance Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Jest (JavaScript Testing Framework), Unit Testing, Test Case, React.js, API Testing, Test Driven Development (TDD), Software Testing, Mockups, Javascript
Intermediate · Guided Project · Less Than 2 Hours

University of Leeds
Skills you'll gain: Web Design and Development, Web Development, Web Content Accessibility Guidelines, Web Design, Hypertext Markup Language (HTML), Front-End Web Development, Full-Stack Web Development, Data Security, Web Content, Back-End Web Development, Program Development, Cascading Style Sheets (CSS), Javascript, Information Privacy, Computer Architecture
Beginner · Course · 1 - 4 Weeks
University of Glasgow
Skills you'll gain: Javascript, Software Development, Front-End Web Development, Event-Driven Programming, JavaScript Frameworks, Data Modeling, Software Testing, Machine Learning, Software Engineering, Object Oriented Programming (OOP), Software Development Tools, Computer Programming Tools, Development Environment, Algorithms, Version Control, Computer Graphics, Program Management, Animations
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Extensible Markup Language (XML), Android Development, Mobile Development, Real Time Data, Data Integration, UI Components, User Interface (UI), Java Programming
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Data Visualization Software, Data Visualization, Interactive Data Visualization, Visualization (Computer Graphics), JSON, Data Mapping, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Microsoft
Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), Data Persistence, Event-Driven Programming, HTML and CSS, Web Applications, Front-End Web Development, Semantic Web, Javascript, Web Content Accessibility Guidelines, Data Storage Technologies, Application Security, User Interface (UI), Data Validation
Beginner · Course · 1 - 3 Months

Skills you'll gain: React.js, Jest (JavaScript Testing Framework), JavaScript Frameworks, Front-End Web Development, Unit Testing, UI Components, Web Development Tools, Ajax, Javascript, User Interface (UI), Software Testing, Application Programming Interface (API)
Intermediate · Course · 1 - 3 Months