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: Responsive Web Design, Bootstrap (Front-End Framework), HTML and CSS, Cascading Style Sheets (CSS), Front-End Web Development, Hypertext Markup Language (HTML), Web Design, Browser Compatibility, Web Development Tools, Semantic Web, UI Components, Web Analytics and SEO, Server Side, Animations, Debugging, Javascript, Data Validation
★ 4.7 (1.9K) · Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Java Programming, Java, Pedagogy, Program Development, Object Oriented Programming (OOP), Computer Programming, Computational Thinking, Cultural Responsiveness, Digital pedagogy, Object Oriented Design, Algorithms
★ 4.7 (11) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Software Quality (SQA/SQC), Test Automation
★ 4.6 (20) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Eclipse (Software), Object Oriented Design, Program Development, Code Reusability, Computer Programming
★ 4.7 (24) · Intermediate · Guided Project · Less Than 2 Hours

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

Princeton University
Skills you'll gain: Theoretical Computer Science, Data Structures, Computer Science, Computer Architecture, Computer Systems, Algorithms, Computer Programming, Computational Logic, Java Programming, Computer Hardware, Scalability
★ 4.7 (786) · Intermediate · Course · 1 - 3 Months
Skills you'll gain: Node.JS, Restful API, Database Design, Front-End Web Development, React Redux, Ajax, Database Development, Database Application, Server Side, Back-End Web Development, NoSQL, Javascript, Full-Stack Web Development, React.js, Performance Tuning, API Design, Data Structures, MongoDB, Debugging, JavaScript Frameworks
★ 4.4 (1.5K) · Beginner · Specialization · 3 - 6 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

Pearson
Skills you'll gain: Java, Transaction Processing, File I/O, Java Programming, Data Access, Object Oriented Design, Dataflow, Data Persistence, Database Management, Stored Procedure, SQL, Application Development, Information Management, Command-Line Interface, Application Deployment, Data Integrity, Data Import/Export, OS Process Management, Application Programming Interface (API), Mitigation
★ 5 (6) · Intermediate · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Frontend Integration, CI/CD, Jenkins, Docker (Software), Spring Boot, Continuous Integration, Configuration Management, Containerization, Cloud-Native Computing, Scalability, Software Documentation, Application Deployment, Java, API Design, Java Programming, API Gateway, Back-End Web Development, JUnit, Application Programming Interface (API), React.js
★ 3.9 (21) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: C# (Programming Language), ASP.NET, Full-Stack Web Development, .NET Framework, Back-End Web Development, CI/CD, Microsoft Azure, Docker (Software), Web Development, Containerization, Application Deployment, PostgreSQL, Object Oriented Programming (OOP), Cloud Infrastructure, Database Management, Web Development Tools, Database Design, API Design, GitHub, Middleware
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: COBOL (Programming Language), Prompt Patterns, Prompt Engineering, Code Review, Code Reusability, Application Lifecycle Management, CI/CD, Agentic systems, Software Technical Review
Intermediate · Course · 1 - 3 Months