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: 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

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: 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

LearnQuest
Skills you'll gain: Apache Maven, Spring Framework, Microservices, Java Platform Enterprise Edition (J2EE), Spring Boot, Java, Java Programming, Build Tools, Back-End Web Development, Software Architecture, Server Side, Load Balancing, Cloud Development, Web Services, Restful API, Systems Architecture, Web Applications
★ 4.5 (52) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, OS Process Management, Maintainability, Performance Tuning, Scalability, Data Sharing, Software Design, Data Integrity
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Development Environment, Program Development, Computer Programming, Programming Principles, Data Structures, Java, Integrated Development Environments, Maintainability, Code Reusability, Memory Management, Computational Logic, Debugging, Software Installation, Command-Line Interface, Problem Solving
Beginner · Course · 3 - 6 Months

University of Pennsylvania
Skills you'll gain: File I/O, Matplotlib, Object Oriented Design, Java, Object Oriented Programming (OOP), Data Analysis, Unit Testing, Pandas (Python Package), Java Programming, Plot (Graphics), Eclipse (Software), Application Development, Data Visualization, Data Structures, Data Science, Data Cleansing, Programming Principles, Computer Programming Tools, Python Programming, Computer Programming
★ 4.5 (1.9K) · Beginner · Specialization · 3 - 6 Months

EDUCBA
Skills you'll gain: Hypertext Markup Language (HTML)
★ 4.4 (47) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Integrated Development Environments, Mobile Development, Computer Programming, Programming Principles, Data Structures
★ 4.4 (180) · Beginner · Guided Project · Less Than 2 Hours

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 (51) · Beginner · Specialization · 1 - 3 Months

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

Skills you'll gain: JUnit, Test Driven Development (TDD), Version Control, Git (Version Control System), GitHub, Performance Tuning, Unit Testing, Data Structures, Java Programming, Development Testing, Algorithms, Program Development, Software Testing, Java, Test Automation, Test Case, Software Development, Scalability
★ 4 (64) · Beginner · Course · 1 - 4 Weeks