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 Platform Enterprise Edition (J2EE), Application Deployment, Web Applications, Application Servers, Java, Web Servers, Web Development, Server Side, Application Frameworks
Intermediate · Course · 1 - 4 Weeks
Codio
Skills you'll gain: Apache Maven, JSON, JUnit, Java Programming, Java, Restful API, Integrated Development Environments, Programming Principles, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: JUnit, File I/O, Unit Testing, Program Development, Debugging, Java, Maintainability, Software Development, Secure Coding, Software Testing, Test Case, Authentications, Application Security, Cryptography, Object Oriented Programming (OOP), Eclipse (Software), Integrated Development Environments, Encryption, Data Structures
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Software Design
Intermediate · Course · 1 - 3 Months

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

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Java Programming, Java, Computer Programming, Data Validation, Data Integrity, Computer Science
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java, Software Development Life Cycle, Program Development, Computer Programming, Development Environment, Software Development, Integrated Development Environments, Command-Line Interface, Linux Commands
Beginner · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Java, Object Oriented Programming (OOP), Java Programming, Android Development, Android Studio, Mobile Development, Programming Principles, Integrated Development Environments
Mixed · Course · 1 - 4 Weeks

Rice University
Skills you'll gain: Dataflow, Java, Distributed Computing, Programming Principles, Application Frameworks, Algorithms, Performance Tuning, Functional Design, Computer Science
Intermediate · Course · 1 - 3 Months

Duke University
Skills you'll gain: Algorithms, Debugging, Java, Computer Programming, Software Design, Programming Principles, Object Oriented Programming (OOP), Program Development, Data Analysis Software, Data Import/Export, File I/O, Integrated Development Environments
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Eclipse (Software), Java, Java Programming, Functional Design
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Object Oriented Programming (OOP), Software Documentation, Java Programming, Java, Computer Programming, Programming Principles, Computational Thinking, Computer Science
Intermediate · Course · 1 - 4 Weeks