Codio
Skills you'll gain: Apache Maven, JSON, JUnit, Java Programming, Java, Restful API, Integrated Development Environments, Programming Principles, Package and Software Management, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Data Structures, Graph Theory, Algorithms, Java, Object-Relational Mapping, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: IntelliJ IDEA, Integrated Development Environments, Java, Development Environment, Debugging, Object Oriented Programming (OOP), Programming Principles
Beginner · Course · 1 - 4 Weeks

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

Peking University
Skills you'll gain: Object Oriented Design, Unified Modeling Language, System Design and Implementation, Software Development, Software Engineering, Object Oriented Programming (OOP), Software Design, Software Design Patterns, Maintainability, Software Development Methodologies, Software Architecture, Systems Analysis, Requirements Analysis, Data Modeling
Beginner · Course · 3 - 6 Months

LearnQuest
Skills you'll gain: Java, Application Servers, Web Applications, Development Environment, Java Programming, Application Development, Program Development, Object Oriented Programming (OOP), Mobile Development, Computer Programming, UI Components, User Interface (UI), Command-Line Interface, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Design, Software Design Patterns, Functional Design
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Selenium (Software), Java, File Management, Cascading Style Sheets (CSS), Extensible Markup Language (XML), Test Automation, Web Scraping, Apache, Web Development Tools, Data Import/Export, Verification And Validation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Eclipse (Software), Computer Programming, Development Environment, Integrated Development Environments, Data Structures, Software Installation
Beginner · Course · 1 - 3 Months

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

Skills you'll gain: Eclipse (Software), Integrated Development Environments, Java Programming, Object Oriented Programming (OOP), Development Environment, Program Development, Software Installation, Debugging, Computer Programming
Beginner · Course · 1 - 3 Months