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.

LearnQuest
Skills you'll gain: Simple Object Access Protocol (SOAP), Web Services, Extensible Markup Language (XML), Java, Web Applications
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Spring Framework, Spring Boot, Java Programming, Java, Apache Maven, Unit Testing, Gradle, Application Programming Interface (API), Google Cloud Platform, Simple Object Access Protocol (SOAP), Application Deployment, Development Environment, Hibernate (Java), Cloud Deployment, Back-End Web Development, YAML, Restful API, Software Configuration Management, Load Balancing
Intermediate · Specialization · 3 - 6 Months

University of Washington
Skills you'll gain: Responsive Web Design, Web Design, GitHub, HTML and CSS, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Version Control, User Experience Design, Usability, User Experience, Javascript, Web Content Accessibility Guidelines, Browser Compatibility, User Story, Web Design and Development, Front-End Web Development, GitHub Copilot, Mobile Development, Semantic Web, Git (Version Control System)
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Application Deployment, Application Servers, Enterprise Application Management, DevOps, System Configuration, Java Platform Enterprise Edition (J2EE), Server Administration, Java, Data Access, Security Management, Servers, Middleware, Development Environment, Application Development, Build Tools
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Jenkins, CI/CD, Build Tools, Apache Tomcat, Apache Maven, Docker (Software), Continuous Integration, Shell Script, Continuous Deployment, Application Deployment, Devops Tools, Unix Shell, Software Configuration Management, Application Servers, DevOps, Continuous Delivery, Containerization, Solution Delivery, Command-Line Interface, Systems Integration
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Middleware, Node.JS, Model View Controller, Development Environment, Application Frameworks, Application Development, JavaScript Frameworks, Web Frameworks, Web Applications, Server Side, Service Oriented Architecture, Javascript, Android Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Validation, Data Integrity, Hypertext Markup Language (HTML), Verification And Validation, Scripting, Javascript, Web Applications
Intermediate · Guided Project · Less Than 2 Hours

Illinois Tech
Skills you'll gain: Javascript and jQuery, jQuery, Responsive Web Design, Web Development, Version Control, Web Design, Cascading Style Sheets (CSS), Web Design and Development, Hypertext Markup Language (HTML), HTML and CSS, Web Frameworks, GitHub, Web Applications, Javascript, Web Development Tools, Git (Version Control System), Infrastructure Architecture, Network Architecture, Network Infrastructure, Browser Compatibility
Build toward a degree
Beginner · Course · 1 - 3 Months

Skills you'll gain: Javascript, Data Structures, Dataflow, Computer Programming
Advanced · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: TypeScript, Javascript, React.js, Debugging, Integrated Development Environments
Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, JUnit, Object Oriented Programming (OOP), Software Design Patterns, Software Engineering, Java, Unified Modeling Language, Software Design, Java Programming, Software Architecture, Model View Controller, Conceptual Design
Build toward a degree
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Javascript, Event-Driven Programming, Web Design and Development, Interactive Design, Web Applications, Interaction Design, Web Development, Data Validation
Beginner · Guided Project · Less Than 2 Hours