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: Selenium (Software), Postman API Platform, JUnit, Test Automation, API Testing, Software Quality Assurance, Test Tools, Test Script Development, Quality Assurance, Unit Testing, Software Testing, Continuous Integration, Automation, Data Validation, Performance Testing, Test Case, Agile Methodology, Integration Testing, Debugging, Javascript
★ 4.7 (78) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Responsive Web Design, HTML and CSS, JSON, React.js, Jest (JavaScript Testing Framework), Hypertext Markup Language (HTML), Javascript, Bootstrap (Front-End Framework), Web Design, Web Development Tools, Web Design and Development, Cascading Style Sheets (CSS), Software Testing, Unit Testing, User Experience Design, Frontend Integration, Web Development, Mobile Development, JavaScript Frameworks, Test Case
★ 3.4 (82) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Email Automation, Google Workspace, Google Sheets, Stakeholder Communications, Communication Planning, Scripting, Gmail, Stakeholder Management, Project Schedules, Project Management, Javascript
★ 4.5 (131) · Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Javascript, Web Development, Web Development Tools, Scripting, Hypertext Markup Language (HTML), Programming Principles
★ 4.5 (112) · Beginner · Guided Project · Less Than 2 Hours

Yonsei University
Skills you'll gain: Data Mining, Unstructured Data, Data Preprocessing, Data Processing, Natural Language Processing, Classification Algorithms, Analytics, Java, Unsupervised Learning, Machine Learning Methods, Supervised Learning, Text Mining
★ 3.9 (40) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Unit Testing, Server Side, Javascript, Debugging, Back-End Web Development, File Systems, File I/O, Test Script Development, Software Testing, Development Testing, Web Applications, Event-Driven Programming, Code Reusability
★ 3.8 (86) · Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Spring Framework, Data Store, Transaction Processing, Object-Relational Mapping, Data Persistence, Spring Boot, Database Management, Database Systems, Data Access, Restful API, Web Services, Web Applications
★ 3.9 (47) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Node.JS, Restful API, Database Design, Database Development, Database Application, NoSQL, MongoDB, Back-End Web Development, Performance Tuning, API Design, Cloud Applications, Relational Databases, Authentications, Server Side, Application Programming Interface (API), Cloud Development, Cloud Deployment, Middleware, Scalability, Javascript
★ 4.5 (55) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Node.JS, User Interface (UI), MongoDB, Javascript, Web Design, Front-End Web Development, Middleware, Cascading Style Sheets (CSS), Bootstrap (Front-End Framework), jQuery, Security Controls
★ 4.2 (67) · Intermediate · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Microservices, Spring Boot, Software Architecture, API Gateway, Spring Framework, Cloud-Native Computing, Service Oriented Architecture, Load Balancing, Systems Architecture, Cloud Computing, Software Design Patterns, Scalability, Restful API, Service Management, Network Routing
★ 4.3 (76) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Eclipse (Software), Embedded Software, Program Development, Microarchitecture, Computer Architecture, Software Development, Software Development Tools, System Programming, Integrated Development Environments, Hardware Architecture, Embedded Systems, White-Box Testing, Verification And Validation, System Design and Implementation, Simulations, System Configuration, Debugging
★ 3.9 (100) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Java, Computer Programming, Data Structures, Code Reusability, Programming Principles
Intermediate · Course · 1 - 4 Weeks