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: Jenkins, CI/CD, Apache Tomcat, Apache Maven, Docker (Software), Continuous Integration, Application Lifecycle Management, Shell Script, Continuous Deployment, Application Deployment, Devops Tools, Application Servers, DevOps, Continuous Delivery, Git (Version Control System)
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Google Gemini, Code Review, Application Deployment, Continuous Deployment, Responsible AI, Software Development Tools, Google Cloud Platform, Generative AI, Prompt Engineering, Debugging, Application Development
Intermediate · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Database Design, Relational Databases, Database Application, Database Management, Database Systems, Database Theory, Databases, SQL, MySQL, Transaction Processing, Stored Procedure, Data Modeling, Unified Modeling Language, Data Integrity, Database Architecture and Administration, Query Languages, Data Manipulation, Java, Data Structures, Application Development
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Illinois Tech
Skills you'll gain: Relational Databases, Database Application, Database Management, SQL, MySQL, Database Design, Transaction Processing, Stored Procedure, Java, Data Structures, Data Integrity, Performance Tuning
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React.js, JavaScript Frameworks, UI Components, Javascript, Web Development, User Interface (UI)
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Cloud-Native Computing, Cloud Applications, Cloud API, Google Cloud Platform, Authentications, Serverless Computing, Identity and Access Management, API Design, Event-Driven Programming, Microservices, Node.JS, Authorization (Computing), Scalability
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Angular, Cascading Style Sheets (CSS), Web Design and Development, Front-End Web Development, HTML and CSS, Responsive Web Design, jQuery, React.js, Javascript, Web Applications, JavaScript Frameworks, Web Development, UI Components, User Interface and User Experience (UI/UX) Design, Web Content Accessibility Guidelines, Event-Driven Programming, Maintainability, Software Design Patterns, Data Structures
Beginner · Specialization · 1 - 3 Months

Simplilearn
Skills you'll gain: Apache Maven, Build Tools, Continuous Integration, Software Configuration Management, Version Control, Java, Software Versioning, Mac OS, Software Installation, Development Environment
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: JUnit, Testability, Unit Testing, Software Testing, Test Case, Test Tools, Java
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Extensible Markup Language (XML), Ajax, Extensible Languages and XML, Web Design, Java Platform Enterprise Edition (J2EE), Cascading Style Sheets (CSS), Data Validation, Web Applications, Scripting, Javascript and jQuery, Web Development, Android Development, Hypertext Markup Language (HTML), Middleware, Model View Controller, Web Services, Hibernate (Java), Visualization (Computer Graphics), Java, Mobile Development
Beginner · Specialization · 3 - 6 Months

Simplilearn
Skills you'll gain: C (Programming Language), Data Structures, Computer Programming, Programming Principles, Data Management, System Programming, Algorithms
Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: TypeScript, Node.JS, React.js, Server Side, Javascript, Web Development, Data Validation, Middleware, Scalability, Web Design, Computer Programming, Maintainability
Intermediate · Course · 1 - 4 Weeks