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: Restful API, Application Programming Interface (API), Authentications, Test Automation, JSON, Security Testing, Authorization (Computing), Java Programming, Scenario Testing, Java, Test Tools, Back-End Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Ajax, Java Programming, Test Script Development, Java, Software Testing, Test Automation, Scripting, Test Tools, Automation, Cascading Style Sheets (CSS)
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, Software Architecture, Databases, Service Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Front-End Web Development, Git (Version Control System), Web Content Accessibility Guidelines, User Interface and User Experience (UI/UX) Design, HTML and CSS, Cascading Style Sheets (CSS), UI/UX Strategy, React.js, Code Review, Version Control, Usability, User Interface (UI), Usability Testing, User Interface (UI) Design, Software Technical Review, Web Applications, Hypertext Markup Language (HTML), Semantic Web, Javascript
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Responsive Web Design, JSON, User Interface (UI) Design, Color Theory, Cascading Style Sheets (CSS), User Interface (UI), HTML and CSS, Hypertext Markup Language (HTML), Restful API, Web Content Accessibility Guidelines, Event-Driven Programming, Web Design, Typography, API Design, Web Applications, User Interface and User Experience (UI/UX) Design, Application Programming Interface (API), React.js, Javascript, Web Development
Beginner · Specialization · 3 - 6 Months

University of Minnesota
Skills you'll gain: Software Design Patterns, Software Design, Software Engineering, Application Security, Object Oriented Design, Software Architecture, Software Quality (SQA/SQC), Threat Modeling, Maintainability, Code Coverage, Application Deployment, Continuous Deployment, Continuous Delivery, Software Testing, Continuous Integration, CI/CD, Test Driven Development (TDD), Software Documentation, Build Tools, Technical Documentation
Intermediate · Course · 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

The Linux Foundation
Skills you'll gain: Bash (Scripting Language), File Systems, Package and Software Management, Linux, Command-Line Interface, Unix Commands, Linux Commands, Shell Script, grep, Linux Administration, Unix Shell, Scripting, Software Development Tools, Computer Programming Tools, File Management, Build Tools, Unix, Scripting Languages, Program Development, System Programming
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Browser Compatibility, Java Programming, Java, Test Tools, Software Testing, Javascript, Eclipse (Software), Apache Maven, Development Environment, Object Oriented Programming (OOP), Cascading Style Sheets (CSS), Software Installation, System Configuration
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Role-Based Access Control (RBAC), Postman API Platform, Authentications, Spring Framework, API Testing, Authorization (Computing), Restful API, Identity and Access Management, Secure Coding, Java Programming, Application Design, Spring Boot, User Accounts, Application Programming Interface (API), API Design, Web Applications
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), JUnit, HTML and CSS, Test Automation, Hypertext Markup Language (HTML), Software Testing, Web Design and Development, Test Script Development, Test Tools, Web Development, Unit Testing, Software Quality Assurance, Java, Data Structures, Java Programming, Cascading Style Sheets (CSS), Test Execution Engine, Code Reusability, Debugging, Software Design Patterns
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Mobile Development, React Native, Responsive Web Design, Browser Compatibility, HTML and CSS, Cross Platform Development, Hypertext Markup Language (HTML), Web Design, Javascript, Application Development, Application Frameworks, JavaScript Frameworks, Cascading Style Sheets (CSS), Web Development, React.js, UI Components
Beginner · Course · 1 - 4 Weeks