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.

Packt
Skills you'll gain: Spring Boot, Hibernate (Java), Spring Framework, Web Applications, Application Development, Web Development, Program Development, Restful API, Application Frameworks, Secure Coding, Bootstrap (Front-End Framework), Development Environment, Object-Relational Mapping, Model View Controller, UI Components, Software Development Tools, Authentications, User Interface (UI), Databases
Intermediate · Course · 1 - 4 Weeks

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

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Program Development, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Computer Science
Intermediate · Course · 1 - 3 Months

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

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

Skills you'll gain: Application Deployment, Cloud Deployment, Cloud-Native Computing, Cloud Development, Cloud Applications, Google Cloud Platform, Performance Tuning, Cloud Storage, Debugging, Containerization, Cloud Services, Development Environment, Data Storage, Node.JS
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Frontend Integration, Full-Stack Web Development, IntelliJ IDEA, Spring Boot, Spring Framework, React.js, Restful API, Front-End Web Development, Back-End Web Development, Context Management, Web Applications, Application Frameworks, Development Environment, Command-Line Interface, Data Store
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Jest (JavaScript Testing Framework), User Acceptance Testing (UAT), Cucumber (Software), Postman API Platform, Software Testing, Behavior-Driven Development, Selenium (Software), Test Driven Development (TDD), Performance Stress Testing, API Testing, Unit Testing, Performance Testing, Application Programming Interface (API), User Interface (UI), Javascript
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Google Gemini, Gemini, Application Deployment, Responsible AI, Software Development Tools, Google Cloud Platform, Generative AI, AI literacy, AI Integrations, Debugging, Application Development, Cloud-Based Integration
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Javascript, Application Programming Interface (API), Code Reusability, Software Design Patterns, Data Management, Data Structures, Web Development, Computational Logic, Programming Principles, Data Import/Export, Software Development, Software Engineering, Performance Tuning
Intermediate · Specialization · 1 - 3 Months
Skills you'll gain: Django (Web Framework), Web Applications, Web Development, Expense Reports, Back-End Web Development, Expense Management, Application Development, Database Application, Data Visualization, Business Process Automation, Chart.js, Data Modeling, Business Logic, Development Environment, Data Security, GitHub, Javascript, Project Documentation, Git (Version Control System)
Intermediate · Guided Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: Stored Procedure, PL/SQL, SQL, Database Design, Database Management, Query Languages, Database Management Systems, Data Access, Databases, Database Systems, Java, Java Programming, JUnit
Beginner · Course · 1 - 4 Weeks