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.

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), Software Design Patterns, Unified Modeling Language, Software Design, Java, Java Programming, Software Architecture, User Interface and User Experience (UI/UX) Design, API Design, Software Development, AI Integrations
Intermediate · Course · 1 - 3 Months
Coursera
Skills you'll gain: Code Reusability, React.js, JavaScript Frameworks, Web Applications, UI Components, Application Development, User Interface (UI), Front-End Web Development, Javascript
★ 4.1 (13) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Build Tools, Authorization (Computing), Data Validation
★ 4.8 (15) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Cascading Style Sheets (CSS), Web Design, Web Design and Development, UI Components, Web Language, Front-End Web Development, Mobile Development, Javascript, Animations, User Interface (UI), Web Development Tools, Web Content Accessibility Guidelines, Typography, Semantic Web, GitHub, Version Control, Application Deployment, Development Environment
★ 5 (8) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Spring Framework, Hibernate (Java), Java Programming, Spring Boot, Java, Object-Relational Mapping, Database Management, Application Frameworks, Data Access, Apache Maven, SQL, Object Oriented Programming (OOP), Data Persistence, Functional Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, Node.JS, Docker (Software), React.js, Front-End Web Development, Containerization, Full-Stack Web Development, Back-End Web Development, Frontend Integration, Server Side, Web Design and Development, JavaScript Frameworks, Web Development, Web Applications, Application Development, Javascript, Application Programming Interface (API), Software Development, Authentications, Project Management Software
★ 4.8 (16) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Test Script Development, Unit Testing, Test Case, Development Testing, Test Tools, React.js, API Testing, Software Testing, Web Development Tools, Javascript
★ 4.3 (7) · Intermediate · Guided Project · Less Than 2 Hours

Universidad de los Andes
Skills you'll gain: NoSQL, Big Data, File Systems, Data Infrastructure, Apache Hadoop, Data Architecture, Distributed Computing, Scalability, Database Systems, Cloud Computing, Apache Spark, Public Cloud, Data Processing, Data Storage Technologies, Cloud Services, Data Storage, Data Management
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Data Visualization, Interactive Data Visualization, Visualization (Computer Graphics), JSON, Plot (Graphics), Data Mapping, Javascript
★ 3.7 (7) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Javascript, Software Design Patterns, Data Management, Data Structures, Web Development, Performance Tuning
★ 4.9 (9) · Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Apache Kafka, Prometheus (Software), Data Governance, Distributed Computing, Data Processing, Data Store, Event Monitoring, Network Monitoring, Systems Architecture, Performance Metric, Network Troubleshooting, Network Architecture
★ 4.5 (6) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Kotlin, Android Jetpack, Cross Platform Development, Mobile Development, Cloud Deployment, Android Development, Mobile Development Tools, Code Reusability, Back-End Web Development, UI Components, Server Side, Google Cloud Platform, Cloud Development, Frontend Integration, MongoDB, Interoperability, User Interface (UI), Web Applications, Systems Integration, Restful API
Intermediate · Course · 1 - 4 Weeks