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.

LearnQuest
Skills you'll gain: Java Platform Enterprise Edition (J2EE), Application Deployment, Web Applications, Application Servers, Java, Web Servers, Java Programming, Web Development, Server Side
★ 4.6 (80) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Unit Testing, JUnit, Test Case, Software Testing, Software Development, Software Engineering, Java Programming, Java
★ 4.5 (25) · Beginner · Guided Project · Less Than 2 Hours

Vanderbilt University
Skills you'll gain: File I/O, Matlab, Programming Principles, Functional Design, Computer Programming, Code Reusability, Program Development, Computational Logic, Computer Science, Data Import/Export, Mathematical Software, C (Programming Language), Debugging, Computer Programming Tools, File Management, Data Structures, Data Persistence, Plot (Graphics), Problem Solving
★ 4.8 (18K) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Eclipse (Software), Software Testing, Scripting, Test Tools, UI Components, Integrated Development Environments, Web Applications, Java, Functional Testing
★ 4.5 (362) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: MySQL, Java, Data Access, Data Store, Database Application, Database Development, Java Programming, Databases, Software Development, Data Storage, Program Development, Computer Programming
★ 4.4 (84) · Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Java Programming, Programming Principles, Java, Data Structures, Program Development, Object Oriented Programming (OOP), Computer Programming, Application Programming Interface (API), Database Application
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Object Oriented Design, Software Design, Computer Programming, Software Testing, Application Development
★ 4.5 (114) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Cloud Deployment, Software Development Life Cycle, OpenShift, Server Side, Istio, Kubernetes, Software Architecture, Node.JS, Application Deployment, Restful API, Database Design, CI/CD, Cloud-Native Computing, Responsive Web Design, Git (Version Control System), Front-End Web Development, Ajax, Javascript, Azure DevOps, Software Development
★ 4.6 (9.6K) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: React Native, iOS Development, Apple iOS, Software Development Life Cycle, Flutter (Software), Mobile Development, Software Architecture, Android Studio, User Centered Design, Android Development, Swift Programming, Responsive Web Design, Git (Version Control System), GitHub, User Interface (UI) Design, Android (Operating System), Front-End Web Development, Cascading Style Sheets (CSS), Data Ethics, AI Personalization
★ 4.6 (8.5K) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: Cloud Deployment, Software Development Life Cycle, Open Web Application Security Project (OWASP), OpenShift, Containerization, Server Side, Istio, Kubernetes, Software Architecture, Node.JS, Application Deployment, Restful API, Cloud-Native Computing, Responsive Web Design, Git (Version Control System), Ajax, Grafana, Javascript, Azure DevOps, Software Development
★ 4.6 (9.3K) · Beginner · Professional Certificate · 3 - 6 Months

Duke University
Skills you'll gain: UI Components, Computational Thinking, HTML and CSS, User Interface (UI) Design, Web Design and Development, Interactive Design, Hypertext Markup Language (HTML), Web Development, Programming Principles, Web Design, Javascript, Event-Driven Programming, Computer Programming, Algorithms, Image Analysis, Web Applications, Cascading Style Sheets (CSS)
★ 4.6 (15K) · Beginner · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Model View Controller, Java Platform Enterprise Edition (J2EE), Back-End Web Development, Server Side, Data Access, Apache Tomcat, Application Servers, Java Programming, Relational Databases, Databases, Java, Web Servers, SQL, Authentications, Web Applications, Secure Coding, Software Design Patterns, Data Persistence
★ 4.7 (28) · Intermediate · Course · 1 - 3 Months