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.

Princeton University
Skills you'll gain: Programming Principles, Computer Programming, Object Oriented Design, Object Oriented Programming (OOP), Performance Tuning, Data Structures, Code Reusability, Other Programming Languages, Java Programming, Java, Program Development, Computational Thinking, Computer Science, Algorithms, Theoretical Computer Science, Animations
★ 4.7 (1.4K) · Beginner · Course · 1 - 3 Months

Duke University
Skills you'll gain: Debugging, Bioinformatics, Java, Algorithms, Java Programming, Program Development, Programming Principles, Statistical Analysis, Software Design, Computer Programming, Data Import/Export, Integrated Development Environments, File I/O, Data Processing, Software Documentation, Data Manipulation, Object Oriented Programming (OOP), Data Analysis, Web Scraping, Problem Solving
★ 4.6 (8.1K) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Cloud Deployment, Software Development Life Cycle, OpenShift, Istio, Kubernetes, Node.JS, Software Architecture, Application Deployment, Restful API, Database Design, CI/CD, Cloud-Native Computing, NoSQL, Git (Version Control System), Cloud Applications, Javascript, Front-End Web Development, Ajax, Azure DevOps, Software Development
★ 4.6 (9.7K) · Beginner · Professional Certificate · 3 - 6 Months

EDUCBA
Skills you'll gain: JUnit, Test Automation, Unit Testing, Java Programming, Java, Test Script Development, Object Oriented Design, File I/O, Verification And Validation, Test Tools, Software Testing, Test Execution Engine, Development Testing, Quality Assurance, Software Quality Assurance, System Testing, Computer Programming, Application Development, Test Case, Application Design
★ 4.9 (20) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Apache Maven, Java, Object Oriented Design, Build Tools, Memory Management, Hibernate (Java), Unit Testing, File I/O, Data Persistence, Docker (Software), Software Testing, Software Design Patterns, Integrated Development Environments, Object-Relational Mapping, Functional Design, Maintainability
Beginner · Specialization · 3 - 6 Months

SkillsBooster Academy
Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), Java Programming, Java, GitHub Copilot, Vibe coding, Computer Programming, IntelliJ IDEA, Code Reusability, Data Structures, Programming Principles, Program Development, Development Environment, Integrated Development Environments, Spring Boot, Computer Programming Tools, Code Review, Software Installation, Application Deployment, Back-End Web Development
Beginner · Course · 1 - 3 Months
Skills you'll gain: Node.JS, Restful API, Database Design, Front-End Web Development, React Redux, Ajax, Database Development, Database Application, Server Side, Back-End Web Development, NoSQL, Javascript, Full-Stack Web Development, React.js, Performance Tuning, API Design, Data Structures, MongoDB, Debugging, JavaScript Frameworks
★ 4.4 (1.5K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Hibernate (Java), Object-Relational Mapping, CI/CD, Spring Boot, Restful API, Java Programming, Integration Testing, Continuous Integration, Database Development, Cloud Deployment, Application Security, Java, Containerization, Spring Framework, SQL, NoSQL, Docker (Software), Kubernetes, Test Driven Development (TDD), Object Oriented Design
★ 4.5 (52) · Beginner · Specialization · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Prompt Engineering, ChatGPT, Prompt Patterns, Generative AI Agents, LLM Application, AI literacy, Agentic Workflows, AI Orchestration, AI Enablement, OpenAI API, Java, Java Programming, AI powered creativity, Agentic systems, Generative AI, Artificial Intelligence, Large Language Modeling, AI Workflows, Tool Calling, AI Integrations
★ 4.8 (8.2K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Angular, Frontend Integration, TypeScript, Restful API, Front-End Web Development, JavaScript Frameworks, UI Components, Application Programming Interface (API), Data Persistence, Application Deployment, Unit Testing, Application Frameworks, Development Environment, HTML and CSS, API Design, Web Applications, Javascript, Web Development, Code Reusability, Data Validation
Beginner · Specialization · 1 - 3 Months

LearnKartS
Skills you'll gain: JUnit, File I/O, Object Oriented Design, Java Programming, Object Oriented Programming (OOP), Java, Unit Testing, Maintainability, Software Development, Secure Coding, Software Testing, Programming Principles, Computer Programming, Test Case, Application Development, Cryptographic Protocols, Code Reusability, Application Design, Debugging, Performance Tuning
★ 4.6 (85) · Beginner · Specialization · 1 - 3 Months

Heriot-Watt University
Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Object Oriented Design, Computer Programming, Application Development, Program Development, Programming Principles, Computational Logic, Software Development, Mathematical Software, Software Development Life Cycle, Debugging, Maintainability
★ 4.9 (8) · Beginner · Course · 1 - 4 Weeks