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

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

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

LearnQuest
Skills you'll gain: Stored Procedure, Hibernate (Java), PL/SQL, Relational Databases, Object-Relational Mapping, SQL, Data Access, Java Platform Enterprise Edition (J2EE), Database Design, Databases, Java, Data Manipulation, Data Mapping, Java Programming, JUnit, Object Oriented Programming (OOP), Query Languages, Database Management, Database Systems, Transaction Processing
Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Java Platform Enterprise Edition (J2EE), Application Deployment, Web Applications, Application Servers, Java, Object-Relational Mapping, Application Development, Web Development, Web Servers, Server Side, Application Frameworks, Scripting, Middleware, Javascript and jQuery, Data Storage, Apache Tomcat, Session Initiation Protocols, Enterprise Architecture, Hypertext Markup Language (HTML), Model View Controller
Intermediate · Specialization · 1 - 3 Months

LearnKartS
Skills you'll gain: Java Programming, Object Oriented Programming (OOP), Object Oriented Design, Java, Maintainability, Programming Principles, Computer Programming, Application Development, Android Development, Software Design Patterns, Debugging
Beginner · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Ajax, Web Design, Java Platform Enterprise Edition (J2EE), Cascading Style Sheets (CSS), Web Applications, Scripting, Javascript and jQuery, Web Development, Java, Hypertext Markup Language (HTML), Middleware, Model View Controller, Hibernate (Java), Service Oriented Architecture
Intermediate · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: Model View Controller, Java Platform Enterprise Edition (J2EE), Back-End Web Development, Server Side, Data Access, Apache Tomcat, Application Servers, Relational Databases, Databases, Java, Web Servers, SQL, Stored Procedure, Authentications, Web Applications, Secure Coding, Middleware, Software Design Patterns, Data Validation
Intermediate · Course · 1 - 3 Months

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

Rice University
Skills you'll gain: Java Programming, Java, Data Structures, System Programming, Programming Principles, Debugging, Algorithms
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Unit Testing, JUnit, Test Case, Test Driven Development (TDD), Code Coverage, Software Testing, Software Development, Software Engineering, Java Programming, Java
Beginner · Guided Project · Less Than 2 Hours