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.

Skills you'll gain: Spring Framework, Version Control, Spring Boot, Hibernate (Java), Object-Relational Mapping, GitHub, Git (Version Control System), Java Programming, Java, Software Configuration Management, Software Documentation, Development Environment, JUnit, Restful API, Application Performance Management, Model View Controller, Back-End Web Development, User Accounts, Authentications, Application Programming Interface (API)
Intermediate · Course · 3 - 6 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, Code Reusability, Hypertext Markup Language (HTML), UI Components
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Frontend Integration, CI/CD, Jenkins, Docker (Software), Spring Boot, Continuous Integration, Configuration Management, Containerization, Cloud-Native Computing, Scalability, Software Documentation, Application Deployment, Java, API Design, Java Programming, API Gateway, Back-End Web Development, JUnit, Application Programming Interface (API), React.js
Intermediate · Specialization · 1 - 3 Months
Skills you'll gain: Server Side, Node.JS, Restful API, Database Design, Front-End Web Development, React Redux, Ajax, Database Development, Database Application, Full-Stack Web Development, Back-End Web Development, NoSQL, Javascript, React.js, Performance Tuning, API Design, Data Structures, MongoDB, Debugging, JavaScript Frameworks
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Java Platform Enterprise Edition (J2EE), Java, Context Management, Web Applications, Server Side, Data Storage, Data Sharing
Intermediate · Course · 1 - 4 Weeks

Instituto Tecnológico de Aeronáutica
Skills you'll gain: User Story, Agile Software Development, Backlogs, Agile Methodology, Scrum (Software Development), Sprint Retrospectives, Agile Product Development, Test Driven Development (TDD), Agile Project Management, Requirements Elicitation, Requirements Analysis, Sprint Planning, Software Development Methodologies, Program Development, Diagram Design, Software Development
Intermediate · Course · 1 - 4 Weeks
University of London
Skills you'll gain: Computer Science, Debugging, Development Environment, Computer Systems, Web Applications, Arithmetic, Computer Literacy, General Networking, Javascript, Network Security, Computer Networking, Application Security, Computational Thinking, Visualization (Computer Graphics), Program Development, Applied Mathematics, Computer Programming, General Mathematics, Numerical Analysis, Problem Solving
Build toward a degree
Beginner · Specialization · 1 - 3 Months

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 Colorado Boulder
Skills you'll gain: Field-Programmable Gate Array (FPGA), Hardware Design, Laboratory Experience, Laboratory Reports, Application Specific Integrated Circuits, System Design and Implementation, Embedded Software, Embedded Systems, Electronic Hardware, Electronic Systems, Electrical and Computer Engineering, Eclipse (Software), Electronics Engineering, Test Case, Laboratory Testing, Test Script Development, Verification And Validation, Microarchitecture, Computer Architecture, Software Development
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Meta
Skills you'll gain: Jest (JavaScript Testing Framework), React.js, Web Development Tools, JavaScript Frameworks, Code Reusability, Application Programming Interface (API), Unit Testing, UI Components, Front-End Web Development, Software Design Patterns, Javascript, Development Environment, Context Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Web Services, Restful API, Apache Maven, Build Tools, Spring Boot, Spring Framework, Gradle, Simple Object Access Protocol (SOAP), Application Programming Interface (API), Java, Java Programming, API Design, Object-Relational Mapping, Data Persistence, JSON, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Android Development, Android (Operating System), Mobile Development, Software Design, User Interface (UI) Design, Java Programming, Data Access, Data Persistence, Service Management
Beginner · Course · 1 - 4 Weeks