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: Node.JS, JSON, Server Side, Web Development Tools, Back-End Web Development, JavaScript Frameworks, Web Servers, Application Programming Interface (API), Restful API, Javascript, Web Development, Package and Software Management, Routing Protocols, Software Design Patterns, Maintainability, Servers
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Apache Hadoop, File Systems, Big Data, Java, Data Structures, Infrastructure Architecture, File Management, Systems Architecture, Data Processing, Distributed Computing, Data Storage, Development Environment, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Automation, Software Testing, Test Case, Javascript and jQuery, Browser Compatibility, Automation, Software Design Patterns, UI Components, Java
Intermediate · Course · 1 - 3 Months
Skills you'll gain: JUnit, Test Automation, Unit Testing, Software Testing, Continuous Integration, Performance Testing, Selenium (Software), Quality Assurance, Integration Testing, Test Case, IT Automation, CI/CD, Scripting, Application Performance Management, Debugging, Java, Network Performance Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Apache Maven, Jenkins, Apache Tomcat, Application Deployment, Java, DevOps, Amazon Web Services, CI/CD, Amazon Elastic Compute Cloud, Git (Version Control System)
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Web Applications, React.js, JavaScript Frameworks, Front-End Web Development, Javascript, Cascading Style Sheets (CSS)
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Rust (Programming Language), Command-Line Interface, Package and Software Management, Programming Principles, Software Development, Computer Programming, Debugging
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Selenium (Software), Git (Version Control System), GitHub, Jenkins, Continuous Integration, Test Automation, CI/CD, Test Data, Software Testing, Unit Testing, IntelliJ IDEA, Test Case, Development Environment, Application Frameworks, Apache Maven, Verification And Validation, Maintainability, Debugging
Advanced · Course · 3 - 6 Months

Skills you'll gain: React.js, JavaScript Frameworks, Front-End Web Development, Javascript, Web Development, Software Engineering
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Jenkins, Selenium (Software), GitHub, Git (Version Control System), Performance Testing, Continuous Integration, CI/CD, Apache Maven, Version Control, Java Programming, Test Automation, Object Oriented Programming (OOP), Software Testing, Integration Testing, Browser Compatibility, MySQL Workbench, JSON
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Spring Boot, React.js, Object-Relational Mapping, Restful API, YAML, Data Access, Web Applications, Application Programming Interface (API), Databases, Application Performance Management, Full-Stack Web Development, Development Environment, Configuration Management, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Web Applications, Cascading Style Sheets (CSS), Application Programming Interface (API), Web Services, HTML and CSS, JSON, Javascript, Software Development
Intermediate · Course · 1 - 4 Weeks