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
Intermediate · Guided Project · Less Than 2 Hours

Duke University
Skills you'll gain: File I/O, Java Programming, Object Oriented Programming (OOP), Data Structures, Java, Cryptography, Software Engineering, Computer Programming, Algorithms, Encryption, Web Servers
Beginner · Course · 1 - 3 Months

Duke University
Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Software Engineering, Programming Principles, Computer Programming, Software Design, Predictive Modeling, Algorithms, Data Structures, Performance Testing, File I/O, Debugging, Application Programming Interface (API)
Beginner · Course · 1 - 3 Months

JetBrains
Skills you'll gain: Kotlin, Object Oriented Programming (OOP), Java, Java Programming, Android Development, Functional Design, Interoperability, Computer Programming, Unit Testing
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Angular, HTML and CSS, Front-End Web Development, Javascript, Software Design Patterns, Web Components, Web Applications, Cascading Style Sheets (CSS), Web Development, TypeScript, Responsive Web Design
Intermediate · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Computer Programming, Programming Principles, Software Design, Data Structures, Integrated Development Environments, Debugging, Development Environment
Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Spring Framework, Spring Boot
Intermediate · Course · 1 - 3 Months

University of California San Diego
Skills you'll gain: Graph Theory, Data Structures, Java Programming, Java, Object Oriented Design, Software Design, Algorithms, Theoretical Computer Science, Maintainability, Object Oriented Programming (OOP), Network Routing, Computational Thinking, Application Development
Intermediate · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Android Studio, Android Development, Object Oriented Programming (OOP), Java Programming, Java, Mobile Development, Data Structures, Integrated Development Environments, Computer Programming, Debugging, Algorithms
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Java, Application Development, Java Programming, Software Engineering, Microsoft Visual Studio, Algorithms
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: JUnit, Restful API, Software Design, JSON, Software Testing
Intermediate · Course · 3 - 6 Months

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