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

Microsoft
Skills you'll gain: Responsive Web Design, Git (Version Control System), Web Development, Cascading Style Sheets (CSS), Data Persistence, React.js, Version Control, Performance Tuning, Full-Stack Web Development, GitHub, Event-Driven Programming, HTML and CSS, Application Design, Development Testing, Video Game Development, Software Design Documents, Game Design, Program Development, Software Testing, Javascript
Beginner · Professional Certificate · 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

Scrimba
Skills you'll gain: React.js, Routing Protocols, Code Reusability, JavaScript Frameworks, Frontend Performance, Web Content Accessibility Guidelines, UI Components, Debugging, Javascript, Context Management, Authentications, Data Management
Advanced · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: jQuery, Javascript, Web Applications, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Software Testing, Test Tools, Java
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Jenkins, Test Script Development, CI/CD, Continuous Integration, Test Automation, Apache Maven, Software Configuration Management, DevOps, Automation, Continuous Delivery, Systems Administration, Scripting, Scalability, Context Management, Role-Based Access Control (RBAC), Distributed Computing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Pseudocode, Computational Thinking, Debugging, Algorithms, Programming Principles, Web Development Tools, Computational Logic, Front-End Web Development, Solution Design, Javascript, Computer Programming, Data Structures, Web Development, Technical Communication
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Restful API, Web Services, Java Platform Enterprise Edition (J2EE), Software Design, Java, Application Programming Interface (API), API Design, Web Applications, Object Oriented Design, Software Design Patterns, Software Architecture, Command-Line Interface
Beginner · Course · 1 - 4 Weeks

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

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

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