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.

University of California, Irvine
Skills you'll gain: Back-End Web Development, System Programming, Debugging, Computer Programming Tools, Data Access
Intermediate · Course · 1 - 3 Months

University of Maryland, College Park
Skills you'll gain: Android Development, Mobile Development, Android Studio, Application Development, User Interface (UI), Application Design, Java, Development Environment, Debugging
Mixed · Course · 1 - 3 Months

Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Bootstrap (Front-End Framework), Debugging, UI Components, Front-End Web Development, Semantic Web, Hypertext Markup Language (HTML), Browser Compatibility, Web Content Accessibility Guidelines, Web Analytics and SEO, User Interface (UI), Development Testing, Data Validation, Javascript, Animations
Beginner · Course · 1 - 4 Weeks

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

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Browser Compatibility, Java Programming, Software Testing, Javascript, Eclipse (Software), Apache Maven, Development Environment, Object Oriented Programming (OOP), Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Software Installation, System Configuration
Intermediate · Course · 3 - 6 Months
Skills you'll gain: Node.JS, React Redux, Restful API, Database Design, Ajax, Database Application, Databases, Full-Stack Web Development, Server Side, NoSQL, Back-End Web Development, Front-End Web Development, Javascript, React.js, Performance Tuning, API Design, Data Structures, MongoDB, Debugging, JavaScript Frameworks
Beginner · Specialization · 3 - 6 Months

EDUCBA
Skills you'll gain: Microservices, Spring Framework, Spring Boot, YAML, MongoDB, Application Deployment, NoSQL, Ajax, Software Architecture, Java, Scalability, Load Balancing, Restful API, Web Applications, File Management
Mixed · Course · 1 - 3 Months
University of Michigan
Skills you'll gain: Django (Web Framework), Ajax, jQuery, Model View Controller, Object-Relational Mapping, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), JSON, Linux Commands, Application Deployment, Data Modeling, Database Design, Cloud Deployment, Web Applications, Database Development, Application Development, Web Development, Javascript, Object Oriented Programming (OOP), SQL
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Object Oriented Programming (OOP), File I/O, Data Persistence, Object Oriented Design, Java, Maintainability, Software Design, Program Development, Application Development, Data Management, Data Validation
Intermediate · Course · 1 - 4 Weeks
University of London
Skills you'll gain: Computer Science, Debugging, Development Environment, Computer Systems, Web Applications, Arithmetic, Computer Literacy, Javascript, Network Security, Computer Networking, Computer Programming Tools, Applied Mathematics, Computer Graphics, Web Design and Development, Software Development Tools, Cybersecurity, Computational Thinking, Computer Programming, General Mathematics, Problem Solving
Build toward a degree
Beginner · Specialization · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Angular, JavaScript Frameworks, Unit Testing, Ajax, Cloud Applications, Web Applications, Web Components, Front-End Web Development, Web Development, Javascript, Model View Controller, Software Architecture, Hypertext Markup Language (HTML), UI Components, Software Design Patterns
Intermediate · Course · 1 - 3 Months
École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Software Design, Software Design Patterns, Functional Design, Java, Programming Principles, Performance Tuning, Data Structures, Algorithms
Intermediate · Course · 1 - 3 Months