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.

Coursera
Skills you'll gain: Object Oriented Programming (OOP), Java, Object Oriented Design, Java Programming, Computer Programming
★ 4.6 (54) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: CI/CD, Integration Testing, Continuous Integration, Docker (Software), Java, Cloud Deployment, Containerization, Software Design Patterns, Microservices, Build Tools, Cloud-Native Computing
★ 4.8 (12) · Intermediate · Course · 1 - 4 Weeks

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

Coursera
Skills you'll gain: Java, Data Structures, File I/O, Java Programming, Data Access, Data Cleansing
★ 4.6 (20) · Intermediate · Guided Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: JUnit, Test Driven Development (TDD), Unit Testing, Software Testing, Test Case, Eclipse (Software), Test Script Development, Test Data, Development Testing, Test Automation, Test Execution Engine, Integrated Development Environments, Testability, Java, Test Tools
★ 3.8 (73) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Apache Maven, Java Programming, Java, Build Tools, Database Design, Database Development, Database Application, Eclipse (Software), Full-Stack Web Development, CI/CD, Web Applications, Code Reusability, Continuous Integration, Model View Controller, Web Development, Authentications, Authorization (Computing), Application Development, UI Components, Automation
Beginner · Specialization · 3 - 6 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 (533) · Beginner · Course · 1 - 4 Weeks

Universidad de Palermo
Skills you'll gain: Eclipse (Software), Java, Java Programming, Object Oriented Programming (OOP), Integrated Development Environments, Data Structures, File I/O, Programming Principles, Algorithms, Computer Programming, Software Development Tools, Computational Thinking, Software Development
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Java Programming, Object Oriented Programming (OOP), Object Oriented Design, Java, Code Reusability, Maintainability, Programming Principles, Computer Programming, Application Development, Android Development, Memory Management
★ 4.4 (35) · Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: File I/O, Object Oriented Design, Java Programming, Object Oriented Programming (OOP), Data Structures, Java, Cryptography, Software Engineering, Computer Programming, Code Reusability, Algorithms, Encryption, Maintainability, Data Store, Program Development, Web Analytics and SEO, Data Import/Export, Web Servers, Server Side
★ 4.6 (3.2K) · Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Spring Framework, Java, Spring Boot, Java Programming, Hibernate (Java), Web Development, Web Servers, Web Components, Servers, Application Deployment, Databases
★ 3.8 (13) · Intermediate · Course · 1 - 3 Months

JetBrains
Skills you'll gain: Kotlin, Java Programming, Java, IntelliJ IDEA, Android Development, Mobile Development, Object Oriented Programming (OOP), Integrated Development Environments, Functional Design, Interoperability, Computer Programming, Programming Principles, Scripting, Unit Testing, Software Development, Development Environment, Code Review
★ 4.7 (2.1K) · Intermediate · Course · 1 - 3 Months