
LearnQuest
Skills you'll gain: Spring Framework, Java Programming, Java, File I/O, Java Platform Enterprise Edition (J2EE), Object Oriented Programming (OOP), Application Frameworks, Code Reusability, Data Structures, File Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Structures, Graph Theory, Algorithms, Java Programming, Java, Data Management, Secure Coding, Theoretical Computer Science, Performance Tuning
Intermediate · Course · 1 - 4 Weeks
Codio
Skills you'll gain: Apache Maven, Build Tools, JSON, JUnit, Java Programming, Java, Web Services, Programming Principles, Package and Software Management, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Data Import/Export, Data Wrangling, Data Analysis, Exploratory Data Analysis, Java, Data Processing, Data Manipulation, Java Programming, Statistical Methods, Statistics
Intermediate · Guided Project · Less Than 2 Hours

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

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

Duke University
Skills you'll gain: C (Programming Language), Data Structures, C and C++, Programming Principles, Algorithms, Memory Management
Beginner · Course · 1 - 3 Months

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

Skills you'll gain: Data Structures, Javascript, Application Programming Interface (API), Computer Programming, Data Management
Intermediate · Course · 1 - 4 Weeks

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

Codio
Skills you'll gain: Algorithms, Data Structures, Java, Java Programming, Other Programming Languages
Intermediate · Course · 1 - 4 Weeks