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.

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), Development Environment, Web Development Tools, Web Content Accessibility Guidelines
★ 4.7 (17K) · Mixed · Course · 1 - 4 Weeks

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, Web Development, Development Environment, Web Development Tools, Web Design and Development, JSON, Web Applications, Web Content Accessibility Guidelines, Hypertext Markup Language (HTML), Browser Compatibility, Object Oriented Programming (OOP), Event-Driven Programming, User Experience Design
★ 4.7 (17K) · Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Java, Java Programming, Algorithms, Computational Thinking, Object Oriented Programming (OOP), Functional Design, Development Environment
★ 4.6 (12) · Beginner · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Application Design, Application Development, UI Components, Event-Driven Programming, Integrated Development Environments, Java Programming, User Interface (UI), Java, User Interface (UI) Design, Application Frameworks
★ 4.5 (21) · Intermediate · Guided Project · Less Than 2 Hours

Vanderbilt University
Skills you'll gain: IntelliJ IDEA, Java Programming, Object Oriented Programming (OOP), Java, Integrated Development Environments, Open Source Technology, Development Environment, Programming Principles, Scalability, Functional Design
★ 4.2 (13) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, API Design, API Testing, Spring Boot, Authentications, Test Automation, JSON, Application Programming Interface (API), Test Script Development, Application Deployment, Spring Framework, Object-Relational Mapping, Web Services, Software Quality Assurance, Object Oriented Design, Software Testing, Business Logic, Back-End Web Development, Java Programming, Java
★ 4.9 (60) · Beginner · Specialization · 1 - 3 Months

Duke University
Skills you'll gain: UI Components, User Interface (UI), Computational Thinking, HTML and CSS, Web Design and Development, Interactive Design, Hypertext Markup Language (HTML), Web Development, Programming Principles, Web Design, Javascript, Event-Driven Programming, Computer Programming, Program Development, Algorithms, Web Applications, Cascading Style Sheets (CSS)
★ 4.6 (15K) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Object Oriented Programming (OOP), Eclipse (Software), Java, Java Programming, JUnit, HTML and CSS, Object Oriented Design, Test Automation, Hypertext Markup Language (HTML), Software Testing, Test Script Development, Integrated Development Environments, Web Design and Development, Test Data, Browser Compatibility, Computer Programming, Test Tools, Web Development, Programming Principles
★ 4.5 (29) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: JSON, API Testing, Restful API, Software Quality Assurance, Software Engineering, Application Programming Interface (API), Test Script Development, Java Programming, Java, Data Mapping, Software Testing, Test Case, Web Services
★ 4.6 (20) · Mixed · Course · 1 - 4 Weeks

Princeton University
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Theoretical Computer Science, Operations Research, Computer Programming, Java Programming, Java
★ 4.9 (2K) · Intermediate · Course · 3 - 6 Months

Skills you'll gain: Unit Testing, Test Driven Development (TDD), Test Case, Program Development, Test Script Development, Development Testing, Software Testing, Java Programming, Java, Software Engineering
★ 4.1 (18) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: HTML and CSS, Bootstrap (Front-End Framework), Responsive Web Design, Front-End Web Development, User Interface (UI), Hypertext Markup Language (HTML), JavaScript Frameworks, Web Frameworks, Web Development, Web Applications, Web Development Tools, Cascading Style Sheets (CSS), Web Design, React.js, General Networking, Javascript
★ 4.8 (14K) · Beginner · Course · 1 - 4 Weeks