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.

Board Infinity
Skills you'll gain: Responsive Web Design, User Interface (UI) Design, User Interface (UI), HTML and CSS, Front-End Web Development, Web Development Tools, Web Design and Development, User Interface and User Experience (UI/UX) Design, Bootstrap (Front-End Framework), React.js, Web Development, Web Design, Javascript, Cascading Style Sheets (CSS), UI Components, JavaScript Frameworks, Hypertext Markup Language (HTML), Semantic Web
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Javascript, Code Reusability, Event-Driven Programming, Programming Principles, Data Import/Export, Web Development, Data Mapping
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Continuous Integration, CI/CD, Application Deployment, Node.JS, Continuous Delivery, Test Automation, Git (Version Control System), Software Development, Continuous Deployment, GitHub, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Database Development, Data Maintenance, Java Programming, Enterprise Application Management, Back-End Web Development, Full-Stack Web Development, Database Management, Program Development, Business Logic, Application Design, Frontend Integration
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Software Testing, Test Tools, Java
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Azure DevOps Pipelines, Kubernetes, Azure DevOps, Node.JS, CI/CD, DevOps, Microsoft Development Tools, Microsoft Azure, Devops Tools, Cloud-Native Computing, Test Planning, Continuous Integration, Continuous Delivery, Application Lifecycle Management, Microservices, Containerization, Software Testing, Debugging, Cloud Development, Software Development Tools
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Dashboard Creation, Dashboard, Data Preprocessing, Interactive Data Visualization, Data Visualization Software, Real Time Data, Data Analysis, Application Programming Interface (API), No-Code Development, JSON, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Infosec
Skills you'll gain: Application Security, Secure Coding, Package and Software Management, Node.JS, Vulnerability Management, Javascript, Dependency Analysis, Vulnerability Assessments, Exploitation techniques
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React.js, JavaScript Frameworks, Front-End Web Development, Javascript, UI Components, Programming Principles, Dataflow
Intermediate · Guided Project · Less Than 2 Hours

DeepLearning.AI
Skills you'll gain: Full-Stack Web Development, Retrieval-Augmented Generation, Web Applications, JavaScript Frameworks, React.js, LLM Application, Web Development, Javascript, Tool Calling, Agentic Workflows, Generative AI Agents, Data Persistence
Beginner · Project · Less Than 2 Hours

Skills you'll gain: Angular, JavaScript Frameworks, Model View Controller, Javascript, Web Development, Software Development
Intermediate · Guided Project · Less Than 2 Hours