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: Spring Boot, React.js, Spring Framework, Object-Relational Mapping, Frontend Integration, Restful API, Hibernate (Java), YAML, Data Access, Data Persistence, Web Applications, Databases, Application Performance Management, Full-Stack Web Development, Development Environment, Configuration Management, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Software Design, IntelliJ IDEA, Object Oriented Programming (OOP), Java, Integrated Development Environments, File I/O, Data Structures, Command-Line Interface
★ 4.7 (22) · Beginner · 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 (31) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Angular, Development Environment, Integrated Development Environments, Program Development, Web Development Tools, JavaScript Frameworks, Code Reusability, Javascript, Front-End Web Development, Model View Controller, Web Development
★ 4.3 (21) · Beginner · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Program Development, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Computer Science
★ 4.6 (23) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: jQuery, Javascript, Web Applications, JavaScript Frameworks, Web Development
★ 4.3 (18) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Jenkins, CI/CD, Build Tools, Apache Tomcat, Apache Maven, Docker (Software), Continuous Integration, Shell Script, Continuous Deployment, Application Deployment, Devops Tools, Unix Shell, Software Configuration Management, Application Servers, DevOps, Continuous Delivery, Containerization, Solution Delivery, Command-Line Interface, Systems Integration
★ 3.5 (13) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: JSON, Restful API, Web Applications, Application Programming Interface (API), Responsive Web Design, Cascading Style Sheets (CSS), Dashboard Creation, Event-Driven Programming, HTML and CSS, Javascript, Back-End Web Development, Wireframing, Frontend Integration, Web Development, Web Services, Real Time Data, Game Design, Hypertext Markup Language (HTML), Servers, Software Development
★ 4.8 (19) · Intermediate · Specialization · 1 - 4 Weeks

Microsoft
Skills you'll gain: Responsive Web Design, Git (Version Control System), Web Development, Cascading Style Sheets (CSS), Data Persistence, React.js, Version Control, Performance Tuning, Full-Stack Web Development, GitHub, Event-Driven Programming, HTML and CSS, Application Design, Development Testing, Software Design Documents, Video Game Development, Game Design, Program Development, Software Testing, Javascript
★ 4.2 (17) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: Extract, Transform, Load, Apache Spark, Data Pipelines, PySpark, Apache Hadoop, Data Transformation, MySQL, Data Manipulation, Java Platform Enterprise Edition (J2EE), Data Import/Export, Data Persistence, Development Environment, Software Installation
★ 4.3 (23) · Mixed · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Javascript, Application Programming Interface (API), Code Reusability, Software Design Patterns, Data Management, Data Structures, Web Development, Computational Logic, Programming Principles, Data Import/Export, Software Development, Software Engineering, Performance Tuning
★ 4.6 (18) · Intermediate · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, JUnit, Object Oriented Programming (OOP), Software Design Patterns, Software Engineering, Java, Unified Modeling Language, Software Design, Java Programming, Software Architecture, Model View Controller, Conceptual Design
★ 5 (6) · Intermediate · Course · 1 - 3 Months