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 New Mexico
Skills you'll gain: Middleware, Web Applications, Agile Software Development, Application Frameworks, Ruby on Rails, User Interface (UI), Software Development, Web Design, Data Modeling, Ajax, Software Architecture, Full-Stack Web Development, Model View Controller, Git (Version Control System), Software Development Tools, Relational Databases, Software Design Patterns, Javascript, Network Protocols
Mixed · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: HTML and CSS, React.js, ASP.NET, Restful API, .NET Framework, Web Applications, Web Services, Front-End Web Development, JSON, Application Development, Model View Controller, Program Development, Javascript, Development Environment, Back-End Web Development, API Design, Web Development, Microsoft Visual Studio, Software Design Patterns, Cascading Style Sheets (CSS)
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Maintainability
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Java, Object Oriented Design, File I/O, Program Development, Encryption
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: React.js, Debugging, Web Design and Development, Front-End Web Development, Web Development, JavaScript Frameworks, HTML and CSS, UI Components, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: React.js, Routing Protocols, UI Components, JavaScript Frameworks, Frontend Performance, Front-End Web Development, Performance Tuning, Web Content Accessibility Guidelines, Cascading Style Sheets (CSS), Event-Driven Programming, User Experience Design, User Interface (UI), Jest (JavaScript Testing Framework), Web Development Tools, Interaction Design, Debugging, Javascript, Application Performance Management, Web Frameworks, Data Management
Intermediate · Specialization · 3 - 6 Months

Amazon
Skills you'll gain: Full-Stack Web Development, Restful API, Cloud Deployment, Front-End Web Development, HTML and CSS, Data Persistence, Application Programming Interface (API), Server Side, Java Platform Enterprise Edition (J2EE), Web Applications, Secure Coding, Amazon Elastic Compute Cloud, Back-End Web Development, Spring Boot, Model View Controller, Responsive Web Design, Javascript
Beginner · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Test Automation, Regression Testing, Software Testing, Software Development Tools, Unit Testing, White-Box Testing, Code Coverage, Security Testing, Verification And Validation, Test Case, Test Data, Debugging, Automation, Application Security
Intermediate · Course · 1 - 4 Weeks

Princeton University
Skills you'll gain: Data Structures, Algorithms, Theoretical Computer Science, Java, Computer Programming, Computational Thinking, Graph Theory, Performance Testing
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Ajax, Javascript, Data Structures, Debugging, JSON, Scripting, Web Development, Web Applications, Computer Programming, HTML and CSS, Event-Driven Programming, Software Development, Object Oriented Programming (OOP), Git (Version Control System), Application Programming Interface (API)
Beginner · Course · 1 - 3 Months

University of Maryland, College Park
Skills you'll gain: Android Development, Mobile Development, Data Management, User Interface (UI), UI Components, Human Computer Interaction, Java Programming, Network Model, Geographic Information Systems, Animations, Computer Programming, Computer Graphics
Mixed · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Object Oriented Design, Software Design, Records Management, Programming Principles
Intermediate · Course · 1 - 4 Weeks