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.

Board Infinity
Skills you'll gain: jQuery, Javascript, Web Applications, Data Structures
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Javascript, Event-Driven Programming, Web Design and Development, Interactive Design, Web Applications, Interaction Design, Scripting, UI Components, Web Development, Scripting Languages, Data Validation
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Node.JS, Scalability, Authentications, JSON, Authorization (Computing), Web Applications, Web Development, Server Side, Back-End Web Development, Application Frameworks, Performance Tuning, Javascript, Restful API, Development Environment, Event-Driven Programming, Operating Systems, Email Automation, Microsoft Visual Studio, Debugging
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: TypeScript, Javascript, React.js, Debugging, Integrated Development Environments, Web Development Tools
Intermediate · Guided Project · Less Than 2 Hours
Skills you'll gain: Jest (JavaScript Testing Framework), User Acceptance Testing (UAT), Cucumber (Software), Postman API Platform, Software Testing, Behavior-Driven Development, Test Tools, Selenium (Software), Test Driven Development (TDD), Unit Testing, Acceptance Testing, Performance Testing, Functional Testing, Test Automation, Usability Testing, Application Programming Interface (API), User Interface (UI), Test Case, API Design, Javascript
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Angular, Development Environment, Program Development, JavaScript Frameworks, Javascript, Front-End Web Development, Model View Controller, UI Components, Web Development
Beginner · Guided Project · Less Than 2 Hours

Northeastern University
Skills you'll gain: Object Oriented Design, Java, Software Architecture, Object Oriented Programming (OOP), Data Structures, Software Design, Computer Programming, Programming Principles, Unified Modeling Language, Application Development, UI Components
Mixed · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Web Development, Application Development, Web Applications, JSON, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Software Engineering, Functional Design, Computer Science
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: TypeScript, Data Structures, Javascript
Intermediate · Guided Project · Less Than 2 Hours
Skills you'll gain: Django (Web Framework), Web Applications, Expense Management, Application Development, Database Application, Data Visualization, Business Process Automation, Python Programming, Data Modeling, Development Environment, Data Security, GitHub, Javascript, Project Documentation, Git (Version Control System)
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Selenium (Software), Test Automation, Software Testing, Test Data, Browser Compatibility, Test Case, Java, Automation, Web Development Tools, Debugging
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Application Security, Serverless Computing, Secure Coding, Risk Management Framework, Threat Modeling, Cloud Security, Infrastructure Security, Cloud Services, Web Applications, Cloud Platforms, Javascript, Node.JS, Amazon Web Services
Intermediate · Course · 1 - 4 Weeks