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.

Coursera
Skills you'll gain: Vue.JS, Web Development Tools, Web Applications, Front-End Web Development, HTML and CSS, Javascript, Microsoft Visual Studio
Intermediate Ā· Guided Project Ā· Less Than 2 Hours

Skills you'll gain: Jest (JavaScript Testing Framework), Unit Testing, Test Case, React.js, API Testing, Test Driven Development (TDD), Software Testing, Mockups, Javascript
Intermediate Ā· Guided Project Ā· Less Than 2 Hours

Skills you'll gain: Application Performance Management, Prometheus (Software), System Monitoring, Grafana, Performance Tuning, Frontend Performance, Performance Testing, Performance Management, Server Administration, Web Analytics and SEO, Javascript
Intermediate Ā· Course Ā· 1 - 4 Weeks

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

Coursera
Skills you'll gain: Data Visualization Software, Data Visualization, Interactive Data Visualization, Visualization (Computer Graphics), JSON, Data Mapping, Javascript
Intermediate Ā· Guided Project Ā· Less Than 2 Hours

LearnKartS
Skills you'll gain: Git (Version Control System), Version Control, Integrated Development Environments, Microsoft Visual Studio, Eclipse (Software)
Intermediate Ā· Course Ā· 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: TypeScript, Javascript, Scripting Languages, Hypertext Markup Language (HTML), Web Development Tools, Object Oriented Programming (OOP)
Intermediate Ā· Guided Project Ā· Less Than 2 Hours

Skills you'll gain: Ajax, JSON, Application Programming Interface (API), Javascript, Event-Driven Programming, Data Validation, Web Development, Object Oriented Programming (OOP), Debugging
Intermediate Ā· Course Ā· 1 - 4 Weeks

Skills you'll gain: Node.JS, Web Development, HTML and CSS, Front-End Web Development, Web Servers, Cascading Style Sheets (CSS), Web Applications, Server Side, Javascript, Middleware, Back-End Web Development
Intermediate Ā· Guided Project Ā· Less Than 2 Hours

Skills you'll gain: React.js, Cascading Style Sheets (CSS), Event-Driven Programming, User Experience Design, User Interface (UI), Front-End Web Development, Data Management, JavaScript Frameworks, Javascript, API Design, Data Validation, Real Time Data, Web Development
Intermediate Ā· Course Ā· 1 - 4 Weeks

Skills you'll gain: Javascript, Web Applications, HTML and CSS, Animations, Hypertext Markup Language (HTML), Event-Driven Programming, Web Design and Development, UI Components, Data Structures, Debugging
Beginner Ā· Course Ā· 1 - 4 Weeks
Coursera
Skills you'll gain: React.js, JavaScript Frameworks, Web Applications, UI Components, Application Development, User Interface (UI), Front-End Web Development, Javascript
Beginner Ā· Guided Project Ā· Less Than 2 Hours