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.

JetBrains
Skills you'll gain: Vibe coding, Generative AI Agents, Prompt Engineering, Game Design, Code Review, 3D Assets, Animation and Game Design, 3D Modeling, Integrated Development Environments, Artificial Intelligence, Generative AI, Project Planning, Javascript, Software Development, Product Development, Web Development, Product Design, Animations, Visual Design, Interactive Data Visualization
★ 4.9 (18) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: TypeScript, Debugging, Javascript, Software Development
★ 4.1 (15) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Selenium (Software), Jenkins, Test Script Development, CI/CD, Continuous Integration, Test Automation, Apache Maven, Software Configuration Management, DevOps, Continuous Delivery, Systems Administration, Devops Tools, Scripting, Scalability, Context Management, Role-Based Access Control (RBAC), Distributed Computing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), GitHub, Git (Version Control System), Version Control, CI/CD, File I/O, Object Oriented Programming (OOP), Test Automation, Test Data, Unit Testing, Test Case, Software Testing, Test Script Development, Programming Principles, Web Development Tools, Code Reusability, Test Execution Engine, Javascript, Browser Compatibility, Scripting
★ 4.5 (13) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: JUnit, Test Automation, Test Tools, Test Script Development, Unit Testing, Software Testing, Performance Testing, Quality Assurance, Performance Stress Testing, IT Automation, Performance Tuning, Scripting, Debugging, Network Performance Management, Simulations
★ 4.9 (13) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Javascript, Web Language, Data Persistence, Scripting Languages, Data Storage, Web Development, Programming Principles, Data Structures, Computational Logic, Software Engineering
★ 4.9 (10) · Beginner · Guided Project · Less Than 2 Hours

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Scala Programming, Apache Hadoop, Big Data, Data Manipulation, Distributed Computing, Data Processing, Performance Tuning, SQL, Data Transformation, Network Performance Management, Data Persistence, Data Analysis, Programming Principles
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Front-End Web Development, Application Development, Web Development, Transaction Processing, Development Testing, Frontend Integration, Cryptography, FinTech, Emerging Technologies, Software Design, HTML and CSS, Software Architecture, Test Script Development, User Interface (UI) Design, Experience Design, Javascript, Application Deployment, Payment Systems, Data Management
★ 4.8 (24) · Intermediate · Course · 1 - 4 Weeks

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

Scrimba
Skills you'll gain: React Redux, React.js, Javascript, Web Development Tools, Middleware, Web Development
★ 4.8 (12) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: IntelliJ IDEA, Apache Maven, Build Tools, Data Import/Export, Kotlin, Software Installation, Unit Testing, Software Development, Java, Software Testing, Database Management
★ 4.8 (19) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Business Process Automation, IT Automation, Data Presentation, Code Reusability, C# (Programming Language), Data Capture, File I/O, Programming Principles, Scalability
Beginner · Course · 1 - 4 Weeks