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.

Skills you'll gain: Data Structures, Javascript, Object Oriented Programming (OOP)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Apache Kafka, Apache Spark, Data Pipelines, Distributed Computing, Real Time Data, Data Integration, Apache Hadoop, Security Controls, Configuration Management, Data Processing, Performance Tuning, Encryption, Authorization (Computing), Authentications
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Tools, Test Automation, Software Testing, Test Script Development, Test Case, Regression Testing, Test Execution Engine, Javascript and jQuery, Browser Compatibility, Automation, Software Design Patterns, UI Components, Java
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Jenkins, CI/CD, Continuous Integration, DevOps, Application Deployment, Continuous Delivery, Spring Framework, Build Tools, Version Control
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: JavaScript Frameworks, Event-Driven Programming, Javascript, Frontend Performance, Web Components, Object Oriented Programming (OOP), Web Development, Web Design and Development, Scripting, UI Components, Development Environment, Data Validation, Real Time Data, Browser Compatibility, Programming Principles, Data Storage, HTML and CSS, Maintainability, Debugging
Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Web Development Tools, Data Structures, Javascript, Scripting, Scripting Languages, Programming Principles
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: TypeScript, React.js, UI Components, Javascript, Software Design Patterns
Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Cloud Development, Microsoft Azure, Virtual Machines, Cloud Management, Infrastructure As A Service (IaaS), Virtualization, Application Deployment, Linux Administration, Linux, Web Applications, Node.JS, Javascript, MongoDB
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, Software Design Patterns, Unified Modeling Language, Java Programming, Software Architecture, Application Design, User Interface and User Experience (UI/UX) Design, Software Engineering, API Design, Software Development
Build toward a degree
Intermediate · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Generative AI Agents, Debugging, TypeScript, Agentic systems, AI Workflows, Node.JS, OpenAI API, Generative AI, Program Development, Artificial Intelligence, LLM Application, Programming Principles, Maintainability, Development Environment, Prompt Engineering, Application Frameworks, Javascript, Large Language Modeling, File Systems
Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React.js, UI Components, JavaScript Frameworks, Web Development Tools, Maintainability, Javascript, Programming Principles
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Version Control, Unity Engine, GitHub, Bitbucket, Git (Version Control System), Android Development, C# (Programming Language), Android (Operating System), Game Design, Mobile Development, Scripting, User Interface (UI), 3D Assets, Video Game Development, Animation and Game Design, User Interface (UI) Design, Computer Graphics, Application Development, Graphics Software, Animations
Beginner · Specialization · 3 - 6 Months