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: Adobe After Effects, Animations, Motion Graphics, Musical Composition, Video Editing, Video Production, Timelines, Graphic Design, Scripting
Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Spring Boot, Spring Framework, Java Programming, Java, Java Platform Enterprise Edition (J2EE), Application Servers, Full-Stack Web Development, Hibernate (Java), Data Access, Web Services, Server Side, Performance Tuning, Web Applications, Model View Controller, Object-Relational Mapping, Restful API, SQL, Transaction Processing
Intermediate · Course · 1 - 3 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: Spring Framework, Java Programming, Java Platform Enterprise Edition (J2EE), Object Oriented Programming (OOP), Debugging, Data Structures, File Management
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Java, Web Servers, Encryption, Software Installation
Intermediate · Course · 1 - 4 Weeks

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

University of California San Diego
Skills you'll gain: Debugging, Object Oriented Programming (OOP), Java, Teaching, Programming Principles, Java Programming, Program Development, Pedagogy, Computer Programming, Integrated Development Environments, Software Design, Computational Thinking, Cultural Responsiveness, Test Case, Computational Logic, Pseudocode, Algorithms, Data Structures
Beginner · Specialization · 3 - 6 Months

Rice University
Skills you'll gain: Dataflow, Java, Programming Principles, Application Frameworks, Algorithms, Performance Tuning, Computer Science
Intermediate · 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

Rice University
Skills you'll gain: Apache Kafka, Apache Spark, Apache Hadoop, Distributed Computing, Java, Middleware, Scala Programming, Servers, Network Protocols
Intermediate · Course · 1 - 3 Months