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: Web Services, Restful API, Apache Maven, Build Tools, Spring Boot, Spring Framework, Gradle, Simple Object Access Protocol (SOAP), Application Programming Interface (API), Java, Java Programming, API Design, Object-Relational Mapping, Data Persistence, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months

Instituto Tecnológico de Aeronáutica
Skills you'll gain: Model View Controller, Selenium (Software), Web Applications, Java, Java Programming, Data Access, Java Platform Enterprise Edition (J2EE), Agile Methodology, Web Development, Software Testing, Agile Software Development, Server Side, Software Design Patterns
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Java Platform Enterprise Edition (J2EE), Scripting Languages, Scripting, Java, Java Programming, Server Side, Web Applications, Web Components
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: JUnit, Test Driven Development (TDD), Unit Testing, Software Testing, Test Case, Eclipse (Software), Test Data, Development Testing, Test Automation, Test Execution Engine, Integrated Development Environments, Test Script Development, Java, Test Tools, Maintainability, Software Design
Intermediate · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Stored Procedure, PL/SQL, Relational Databases, Object-Relational Mapping, SQL, Data Access, Java Platform Enterprise Edition (J2EE), Databases, Database Design, Data Persistence, Object Oriented Design, Java, Data Manipulation, Data Mapping, Java Programming, Database Development, JUnit, Object Oriented Programming (OOP), Database Software, Query Languages
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Apache Maven, Java Programming, Java, Build Tools, Database Design, Java Platform Enterprise Edition (J2EE), Database Development, Database Application, Eclipse (Software), Full-Stack Web Development, CI/CD, Web Applications, Code Reusability, Continuous Integration, Model View Controller, Web Development, Authentications, Application Development, UI Components, Automation
Beginner · Specialization · 3 - 6 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Object Oriented Design, Computer Programming, Memory Management
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: HTML and CSS, Web Design and Development, Front-End Web Development, Responsive Web Design, Web Applications, Web Design, Ajax, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Web Development, Web Development Tools, Development Environment, Javascript, Frontend Performance, Web Content Accessibility Guidelines, Server Side, Semantic Web, Software Installation
Mixed · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: HTML and CSS, Cascading Style Sheets (CSS), Javascript, Responsive Web Design, Web Design and Development, Ajax, Front-End Web Development, Bootstrap (Front-End Framework), Hypertext Markup Language (HTML), Web Design, Web Development, Web Development Tools, Development Environment, JSON, Web Applications, Frontend Performance, Browser Compatibility, Object Oriented Programming (OOP), Event-Driven Programming, User Interface and User Experience (UI/UX) Design
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Development Environment, Java, Integrated Development Environments, Key Management, Software Development Tools, Cryptographic Protocols, Encryption, Cryptography, Performance Tuning, Memory Management, Scalability, Software Installation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: User Research, Cascading Style Sheets (CSS), JSON, User Experience Design, Command-Line Interface, Design Research, Javascript, Unix Shell, Usability, Debugging, User Interface (UI), Software Visualization, Web Content Accessibility Guidelines, Pseudocode, Hypertext Markup Language (HTML), User Interface and User Experience (UI/UX) Design, UI Components, Unit Testing, Mobile Development Tools, Code Reusability
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

University of Michigan
Skills you'll gain: Wireframing, Responsive Web Design, HTML and CSS, Hypertext Markup Language (HTML), Web Content Accessibility Guidelines, Cascading Style Sheets (CSS), Web Design, Browser Compatibility, Web Development Tools, Javascript, Bootstrap (Front-End Framework), Web Design and Development, Debugging, Front-End Web Development, Verification And Validation, Web Development, Mockups, Interactive Design, Event-Driven Programming, Web Frameworks
Beginner · Specialization · 3 - 6 Months