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: Java Platform Enterprise Edition (J2EE), Application Deployment, Web Applications, Application Servers, Java, Web Servers, Java Programming, Web Development, Server Side, Application Frameworks, Network Protocols
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Algorithms, Application Programming Interface (API), Data Structures
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Unit Testing, JUnit, Test Case, Software Testing, Software Development, Software Engineering, Java Programming, Java
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: MySQL, Java, Data Access, Data Store, Database Application, Database Development, Java Programming, Databases, Software Development, Data Storage, Program Development, Computer Programming
Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Application Development, UI Components
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Java, Java Programming, Object Oriented Programming (OOP), Spring Boot, Hibernate (Java), Object Oriented Design, Spring Framework, Object-Relational Mapping, Database Management, Computer Programming, Web Development, Authorization (Computing), Database Development, Restful API, Role-Based Access Control (RBAC), Authentications, Debugging, Programming Principles, Development Environment
Beginner · Course · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: HTML and CSS, Ajax, Javascript, Responsive Web Design, Front-End Web Development, Web Design, Web Applications, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Development Environment, Web Development, Web Development Tools, Web Content Accessibility Guidelines, Semantic Web
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Eclipse (Software), Java, Integrated Development Environments, Java Programming, Code Reusability, Functional Design
Intermediate · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: HTML and CSS, Cascading Style Sheets (CSS), Ajax, Javascript, Responsive Web Design, Front-End Web Development, Bootstrap (Front-End Framework), Web Design, Hypertext Markup Language (HTML), Development Environment, Web Development, Web Development Tools, Web Design and Development, JSON, Web Applications, Web Content Accessibility Guidelines, Browser Compatibility, Object Oriented Programming (OOP), Event-Driven Programming, User Interface and User Experience (UI/UX) Design
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Selenium (Software), Java, Java Programming, File I/O, File Management, Cascading Style Sheets (CSS), Extensible Markup Language (XML), Test Automation, Extensible Languages and XML, Test Script Development, Web Scraping, Apache, Web Development Tools, Data Import/Export, Verification And Validation, HTML and CSS, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: User Research, Cascading Style Sheets (CSS), User Experience Design, Design Research, Linux Commands, Unix, Usability, Debugging, User Interface (UI), Software Visualization, Web Content Accessibility Guidelines, Pseudocode, Hypertext Markup Language (HTML), User Interface and User Experience (UI/UX) Design, Javascript, UI Components, Unit Testing, JavaScript Frameworks, Code Reusability, Application Development
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Git (Version Control System), JUnit, Android Studio, Android Development, Unit Testing, Android (Operating System), Version Control, Maintainability, Software Design Patterns, Test Automation, File I/O, Object Oriented Programming (OOP), Integration Testing, Test Driven Development (TDD), Mobile Development, Development Testing, Software Testing, Testability, Software Engineering, Java Programming
Beginner · Specialization · 3 - 6 Months