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.

Skills you'll gain: Apache Maven, File I/O, Build Tools, Data Import/Export, Object Oriented Programming (OOP), JSON, Java Programming, Debugging, JUnit, Code Reusability, Software Documentation, Programming Principles, Data Structures, File Systems, Computer Programming, Java, Data Validation, Network Protocols, Unit Testing, Computer Science
★ 4.5 (200) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Restful API, Application Deployment, Microservices, Docker (Software), Spring Boot, Spring Framework, Containerization, CI/CD, API Design, Application Programming Interface (API), Java Programming, Hibernate (Java), Back-End Web Development, Java, Software Design, Database Application, Application Security, Authentications, Software Development, IntelliJ IDEA
★ 4 (21) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Computer Programming, Virtual Machines, Memory Management
★ 4.7 (538) · Beginner · Course · 1 - 4 Weeks

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

Board Infinity
Skills you'll gain: Eclipse (Software), Java Programming, Object Oriented Programming (OOP), Software Development Tools, Java, Computer Programming Tools, Object Oriented Design, Integrated Development Environments, Development Environment, Computer Programming, Programming Principles, Virtual Machines, Algorithms
★ 4.4 (640) · Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: JUnit, File I/O, Java Programming, Object Oriented Programming (OOP), Java, Unit Testing, Code Reusability, Maintainability, Software Development, Secure Coding, Software Testing, Computer Programming, Application Development, Authentications, Application Security, Android Development, Debugging, Solution Design, Design Strategies, Design Elements And Principles
★ 4.6 (85) · Beginner · Specialization · 1 - 3 Months

EDUCBA
Skills you'll gain: Object Oriented Design, File Management, Software Design, Software Development, Data Management, System Design and Implementation, Persistence, Technical Design, Operations, Design
★ 5 (13) · Intermediate · Course · 1 - 4 Weeks

Rocketseat
Mixed · Course · 1 - 3 Months

Rice University
Skills you'll gain: Java Programming, Dataflow, Java, C and C++, Application Frameworks
★ 4.6 (1.2K) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Spring Framework, Model View Controller, Java Platform Enterprise Edition (J2EE), Application Performance Management, Software Design Patterns, Java Programming, Java, Software Design, Software Architecture, Application Security, Programming Principles, Authorization (Computing), Authentications, Web Applications, Maintainability, Scalability, Application Development, Extensible Markup Language (XML), Application Design, Data Validation
★ 3.7 (15) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Database Design, Frontend Integration, Continuous Integration, Restful API, User Requirements Documents, Docker (Software), Model View Controller, Front-End Web Development, Relational Databases, Databases, User Story, CI/CD, Spring Framework, Java, Java Programming, Database Application, Full-Stack Web Development, Spring Boot, Back-End Web Development, Software Design Documents
★ 4 (11) · Advanced · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Java Programming
★ 4.3 (163) · Advanced · Course · 1 - 4 Weeks