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.

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), Unified Modeling Language, JUnit, Software Testing, Java, Java Programming, Unit Testing, Software Design, Software Development, Test Driven Development (TDD), Diagram Design
★ 4.1 (15) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Google Gemini, Gemini, Application Deployment, Responsible AI, Software Development Tools, Google Cloud Platform, Generative AI, AI literacy, AI Integrations, Debugging, Application Development, Cloud-Based Integration
★ 4.9 (31) · Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Application Security, Serverless Computing, Secure Coding, Risk Management Framework, Cloud Security, Threat Management, Infrastructure Security, Cloud Services, Cloud Platforms, Javascript, Node.JS
★ 4.6 (32) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, Cloud Deployment, Cloud-Native Computing, Cloud Development, Cloud Applications, Google Cloud Platform, Performance Tuning, Cloud Storage, Debugging, Containerization, Cloud Services, Development Environment, Data Storage, Node.JS
★ 4.3 (54) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Spring Framework, Spring Boot, Java Programming, Java, Apache Maven, Unit Testing, Gradle, Application Programming Interface (API), Google Cloud Platform, Simple Object Access Protocol (SOAP), Application Deployment, Development Environment, Hibernate (Java), Cloud Deployment, Back-End Web Development, YAML, Restful API, Software Configuration Management, Load Balancing
★ 4.8 (8) · Intermediate · Specialization · 3 - 6 Months
Skills you'll gain: Apache Maven, Maintainability, Java Programming, Gradle, Software Design, Software Design Patterns, Software Architecture, Build Tools, Object Oriented Design, Object Oriented Programming (OOP), Machine Learning Methods, Integration Testing, Dependency Analysis, User Interface (UI) Design, Design Strategies, Design Elements And Principles, Program Evaluation, Automation
Advanced · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Memory Management, C++ (Programming Language), C (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Data Structures, Programming Principles, Software Design, Python Programming, Java, Algorithms, Performance Tuning
★ 4.5 (14) · Intermediate · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Video Game Development, Game Design, Program Development, Web Development Tools, Software Development, Computer Programming Tools, Software Development Tools, Development Environment, Software Documentation, Data Validation, Javascript, Debugging, Integrated Development Environments, Maintainability, Programming Principles, Data Structures, Code Reusability, Software Design, Computer Programming, Object Oriented Programming (OOP)
★ 4.2 (11) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: User Interface (UI), Java, Java Programming, Object Oriented Design, Object Oriented Programming (OOP), User Interface (UI) Design, Unit Testing, Java Platform Enterprise Edition (J2EE), JUnit, Test Script Development, Data Validation, Software Development, Application Design, Development Testing, Application Development, Program Development, Software Testing, Database Development, Test Automation, Software Documentation
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Angular, Authorization (Computing), JavaScript Frameworks, Application Programming Interface (API), TypeScript, Javascript, Web Development
★ 4.7 (18) · Advanced · Guided Project · Less Than 2 Hours

University of London
Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), JSON, HTML and CSS, Web Content Accessibility Guidelines, Javascript, Application Programming Interface (API), Web Design, Semantic Web, Usability, Web Applications, Web Development, Test Tools, Web Content, Front-End Web Development, Data Structures, Application Frameworks, Network Protocols, Data Ethics, Animations
★ 4.8 (13) · Beginner · Specialization · 1 - 3 Months
Skills you'll gain: MLOps (Machine Learning Operations), Model Deployment, Containerization, Model Optimization, Performance Tuning, Memory Management, Docker (Software), Java, Java Programming, Artificial Intelligence and Machine Learning (AI/ML), Analysis, Data Structures
Advanced · Course · 1 - 4 Weeks