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.
Codio
Skills you'll gain: Apache Maven, Build Tools, JSON, JUnit, Java Programming, Java, Web Services, Programming Principles, Package and Software Management, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Data Structures, Spring Boot, Restful API, Model View Controller, Spring Framework, Web Services, Java Programming, Java, Back-End Web Development, Authentications, Authorization (Computing), Algorithms, Application Security
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Apache Maven, File I/O, Build Tools, Data Import/Export, Object Oriented Programming (OOP), JSON, Java Programming, Debugging, Object Oriented Design, JUnit, Code Reusability, Software Documentation, Programming Principles, Data Structures, File Systems, Computer Programming, Web Services, File Management, Java, Computer Science
Beginner · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Java, Software Development Tools, Application Servers, Web Applications, Development Environment, Java Programming, Java Platform Enterprise Edition (J2EE), Application Development, Program Development, Mobile Development, Computer Programming, UI Components, Event-Driven Programming, User Interface (UI), Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Debugging, Java Programming, Java, Programming Principles, Computer Programming, Computational Logic, Computer Science, Data Storage
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Java Programming, Object Oriented Programming (OOP), Object Oriented Design, Java, Code Reusability, Maintainability, Programming Principles, Computer Programming, Application Development, Android Development, Memory Management
Beginner · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Spring Framework, Spring Boot, Application Development, Redis, Java Programming, Frontend Integration, Object-Relational Mapping, Web Development, Database Development, Integrated Development Environments, Authentications, Application Security, Build Tools, Performance Tuning, Unit Testing, Authorization (Computing), Command-Line Interface, Data Access, Event Monitoring, Software Configuration Management
Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Java, Java Programming, Eclipse (Software), Object Oriented Programming (OOP), Development Environment, Integrated Development Environments, Computer Programming, Program Development, Virtual Machines, Web Applications, Software Installation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Prompt Patterns, ChatGPT, Generative AI, Generative Model Architectures, Data Ethics, Generative AI Agents, Model Deployment, Restful API, Software Design Documents, Software Design, Application Deployment, AI Integrations, AI literacy, Software Architecture, Agentic Workflows, Continuous Integration, Artificial Intelligence and Machine Learning (AI/ML), Software Development, Java Programming
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Angular, HTML and CSS, JavaScript Frameworks, Hypertext Markup Language (HTML), Application Frameworks, Front-End Web Development, Javascript, Software Design Patterns, Java, Web Components, Code Reusability, Web Applications, Full-Stack Web Development, Cascading Style Sheets (CSS), Programming Principles, Web Design, Maintainability, Web Development, UI Components
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Apache Maven, Spring Framework, Spring Boot, Model View Controller, Unit Testing, Frontend Integration, Microservices, Application Development, Redis, Restful API, YAML, Java, Java Programming, MongoDB, Application Deployment, NoSQL, Ajax, Data Persistence, Web Services
Beginner · Specialization · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Android Studio, Android Development, Object Oriented Programming (OOP), Android (Operating System), Java Programming, Java, Mobile Development, Object Oriented Design, Data Structures, Integrated Development Environments, Programming Principles, Computer Programming, Development Environment
Beginner · Course · 1 - 3 Months