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.

Scrimba
Skills you'll gain: JSON, UI Components, Application Deployment, Web Design and Development, Front-End Web Development, Information Architecture, Web Development Tools, Full-Stack Web Development, Web Development, HTML and CSS, Hypertext Markup Language (HTML), Web Applications, Content Management, Cascading Style Sheets (CSS), Application Frameworks, Routing Protocols, Javascript
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: API Gateway, Cloud API, Restful API, Google Cloud Platform, Cloud Applications, JavaScript Frameworks, Proxy Servers, Javascript, Data Store, Performance Tuning
Beginner · Project · Less Than 2 Hours

University of Virginia
Skills you'll gain: Model View Controller, Debugging, Software Design, User Interface and User Experience (UI/UX) Design, User Interface (UI), UI Components, Web Applications, Algorithms, JSON, User Story, Javascript, Event-Driven Programming, Automation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: jQuery, Javascript and jQuery, Event-Driven Programming, Web Development Tools, UI Components, HTML and CSS, Javascript, Web Applications, Data Validation, Animations
Beginner · Course · 1 - 3 Months

Skills you'll gain: TCP/IP, Network Protocols, Application Programming Interface (API), Ajax, Web Development, General Networking, Web Servers, Web Applications, Javascript, Scalability, Event-Driven Programming, Server Side, Real Time Data, Network Analysis
Intermediate · Course · 1 - 3 Months
University of Glasgow
Skills you'll gain: Javascript, HTML and CSS, Web Development, Front-End Web Development, Event-Driven Programming, Computational Thinking, Software Testing, Software Development, Application Frameworks, Computer Programming Tools, Development Environment, Visualization (Computer Graphics), Programming Principles, Computer Graphics, Animations
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: React Native, Mobile Development, Responsive Web Design, Cross Platform Development, iOS Development, UI Components, Android Development, Application Development, Application Programming Interface (API), Development Environment, Javascript, Data Storage, Data Management, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React.js, Full-Stack Web Development, JavaScript Frameworks, Restful API, Front-End Web Development, Back-End Web Development, Spring Boot, Web Applications, User Interface (UI), Application Programming Interface (API), Javascript, Data Modeling
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Server Side, Restful API, API Design, Database Management, Back-End Web Development, Databases, Database Systems, Node.JS, Application Programming Interface (API), Full-Stack Web Development, Authentications, Web Applications, JavaScript Frameworks, Web Development, Web Servers, Authorization (Computing), NoSQL, MongoDB, Servers, Javascript
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Jest (JavaScript Testing Framework), Unit Testing, TypeScript, Angular, Test Case, Software Testing, JavaScript Frameworks, Testability, Development Testing, Code Coverage, Integration Testing, Javascript, Node.JS, Debugging, Mockups, Simulations
Intermediate · Specialization · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Web Design, HTML and CSS, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Bootstrap (Front-End Framework), UI Components, Javascript and jQuery, Front-End Web Development, Usability, Web Development, Browser Compatibility, User Interface (UI), Interactive Design, Javascript, Creative Design, Web Design and Development, Typography, Web Analytics and SEO, Wireframing
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Cloud-Native Computing, Application Deployment, Cloud Applications, Infrastructure as Code (IaC), Google Cloud Platform, Application Performance Management, Docker (Software), Containerization, Performance Tuning, Continuous Deployment, Debugging, Node.JS
Intermediate · Course · 1 - 3 Months