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: Apache Maven, Build Tools, Hibernate (Java), Unit Testing, Data Persistence, Docker (Software), Software Testing, Object-Relational Mapping
Intermediate · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Data Structures, Algorithms, Programming Principles, Functional Design, Java Programming, Other Programming Languages, Performance Tuning, Performance Testing
★ 4.4 (1.8K) · Intermediate · Course · 1 - 4 Weeks
STARWEAVER
Skills you'll gain: Open Web Application Security Project (OWASP), Application Security, Secure Coding, Threat Modeling, IT Security Architecture, DevSecOps, OAuth, Security Architecture Review, Security Requirements Analysis, Application Programming Interface (API), Authentications, Security Testing, AI Integrations, Security Strategy, NIST 800-53, Cybersecurity, Security Management, Security Awareness, Python Programming, Javascript
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Data Science, Web Applications, Python Programming, Data Analysis, Programming Principles, Artificial Intelligence, Computer Programming, Game Design
★ 4.5 (2.2K) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: React.js, TypeScript, UI Components, Dashboard Creation, Interactive Data Visualization, JavaScript Frameworks, Application Deployment, Code Reusability, Frontend Integration, Data Persistence, User Interface (UI), Front-End Web Development, Restful API, Responsive Web Design, Application Programming Interface (API), Context Management, Javascript, JSON
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Visualforce, Salesforce Development, Salesforce, Application Development, Salesforce Object Query Language (SOQL), Restful API, Application Programming Interface (API), Web Services, Data Modeling, API Testing, Javascript, Data Access, SQL, Programming Principles
Intermediate · Course · 1 - 4 Weeks

Chegg Skills
Skills you'll gain: Server Side, Development Environment, Back-End Web Development, Python Programming, Web Development, Program Development, Integrated Development Environments, Software Development Tools, Web Frameworks, AI Enablement, AI Integrations, Web Applications, Software Development, Front-End Web Development, Web Development Tools, Scripting, Hypertext Markup Language (HTML), Application Frameworks, Cascading Style Sheets (CSS), Javascript
Beginner · Course · 1 - 4 Weeks

SkillsBooster Academy
Skills you'll gain: Claude Code, Prompt Engineering, Anthropic Claude, AI Security, Generative AI Agents, Software Development Tools, Software Development, Responsible AI, GitHub, Code Review, Application Deployment, AI Personalization, Generative AI, Software Engineering, Web Development, Artificial Intelligence, Design Software, Front-End Web Development, React.js, Javascript
★ 4.6 (22) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Authentications, Angular, API Design, Application Programming Interface (API), TypeScript, Frontend Integration, Restful API, Authorization (Computing), Web Development Tools, GraphQL, Secure Coding, Full-Stack Web Development, Node.JS, Application Design, Role-Based Access Control (RBAC), Enterprise Security, Enterprise Architecture, Software Architecture, Web Development, Javascript
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Prompt Engineering, GitHub, Version Control, Vibe coding, Git (Version Control System), Claude Code, Prompt Engineering Tools, Development Environment, Web Applications, Application Deployment, GitHub Copilot, Software Development Tools, Computer Programming Tools, AI Enablement, HTML and CSS, Web Development Tools, Application Programming Interface (API), Software Development, Node.JS, Javascript
Beginner · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Microservices, Performance Tuning, CI/CD, DevOps, Scalability, Restful API, Software Architecture, Systems Architecture, Server Side, Secure Coding, Application Deployment, Back-End Web Development, Development Testing, Security Testing, Continuous Integration, Application Performance Management, Javascript, Program Development, Program Implementation
Beginner · Specialization · 3 - 6 Months

SkillsBooster Academy
Skills you'll gain: React.js, OpenAI API, ChatGPT, UI Components, Web Development Tools, Full-Stack Web Development, JavaScript Frameworks, Generative AI, Application Programming Interface (API), Restful API, Front-End Web Development, Web Development, Back-End Web Development, Javascript, Debugging, HTML and CSS, Server Side, Software Development, GitHub, Programming Principles
★ 5 (8) · Beginner · Specialization · 3 - 6 Months