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.
LearnQuest
Skills you'll gain: Java Programming, Spring Framework, Java, File I/O, Object Oriented Programming (OOP), Object Oriented Design, Java Platform Enterprise Edition (J2EE), Programming Principles, Software Design, Computer Programming, Application Frameworks, Data Structures, Software Installation, Virtual Machines, Code Reusability, Web Development, Package and Software Management, Memory Management, Computational Logic, Development Environment
★ 4.6 (2.8K) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: File I/O, Git (Version Control System), Software Development Methodologies, JUnit, Systems Development Life Cycle, Requirements Analysis, Version Control, Application Development, Software Development Life Cycle, Full-Stack Web Development, Test Driven Development (TDD), SQL, Software Development, Restful API, Database Management, Object Oriented Programming (OOP), Decision Intelligence, Digital Transformation, Java Programming, Generative AI
★ 4.3 (629) · Beginner · Professional Certificate · 3 - 6 Months

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

Skills you'll gain: Microservices, Google Cloud Platform, Cloud Applications, Spring Framework, Cloud Development, Spring Boot, Database Management, Cloud Deployment, Cloud-Native Computing, Databases, Database Development, Database Systems, Software Architecture, Application Frameworks, Application Performance Management, Service Oriented Architecture, Application Deployment, Configuration Management
★ 4.3 (1.4K) · Intermediate · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: JUnit, Apache Maven, Restful API, Java Programming, Java, Application Deployment, Microservices, Docker (Software), Object Oriented Programming (OOP), Spring Boot, Spring Framework, Containerization, CI/CD, Unit Testing, API Design, Application Programming Interface (API), Hibernate (Java), Computer Programming, Object Oriented Design, Programming Principles
★ 3.7 (10) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Prompt Patterns, Generative AI, Data Ethics, Generative AI Agents, ChatGPT, Model Deployment, Restful API, Software Design Documents, Software Design, AI Integrations, Application Deployment, LLM Application, AI literacy, Software Architecture, Agentic Workflows, Continuous Integration, Model Evaluation, Artificial Intelligence and Machine Learning (AI/ML), Java Programming
★ 4.7 (12K) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: JSON, Web Development Tools, Jest (JavaScript Testing Framework), Javascript, Object Oriented Programming (OOP), Web Development, Software Testing, Data Structures, Programming Principles, Front-End Web Development, Unit Testing, Event-Driven Programming, Code Reusability, Web Applications, Node.JS, Software Engineering, Computational Logic, Debugging
★ 4.7 (5K) · Beginner · Course · 1 - 3 Months

Princeton University
Skills you'll gain: Data Structures, Algorithms, Graph Theory, Java, Performance Testing, Java Programming, Computational Thinking, Memory Management, Spatial Data Analysis
★ 4.9 (12K) · Intermediate · Course · 3 - 6 Months

Skills you'll gain: File I/O, Object Oriented Programming (OOP), Java, Integrated Development Environments, Object Oriented Design, Java Programming, Development Environment, Maintainability, Computer Programming Tools, Software Development Tools, Software Design, Data Structures, Program Development, Data Persistence, Software Architecture, Debugging, Memory Management, Code Reusability, Programming Principles, File Management
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 (84) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Performance Tuning, Memory Management, Web Servers, Web Applications, Server Side, Computer Networking, TCP/IP, OS Process Management, Context Management, Software Development, Encryption, Network Protocols, Scalability, Maintainability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Integrated Development Environments, Development Environment, Java Programming, Computer Programming Tools, Software Development Tools, Program Development, Java, Debugging, Programming Principles, Code Reusability, Software Installation, Computer Programming, Object Oriented Programming (OOP), Computational Thinking, Data Structures, Computational Logic
Beginner · Course · 1 - 4 Weeks