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: Git (Version Control System), Selenium (Software), Version Control, GitHub, Jenkins, CI/CD, Test Automation, Test Script Development, Test Tools, Browser Compatibility, Test Data, Java, SQL, MySQL
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Spring Boot, React.js, Object-Relational Mapping, Restful API, YAML, Data Access, Web Applications, Databases, Application Performance Management, Full-Stack Web Development, Configuration Management, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Spring Boot, API Design, Spring Framework, JSON, Object-Relational Mapping, Business Logic, Data Modeling, Software Architecture, Data Persistence, Data Access
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Cucumber (Software), Behavior-Driven Development, Selenium (Software), Gherkin (Scripting Language), Test Automation, Test Script Development, JUnit, Software Testing, Apache Maven, Test Case, Scenario Testing, Java
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Javascript, Web Design, Web Design and Development, Event-Driven Programming, Development Environment, Web Development, Scripting, User Interface and User Experience (UI/UX) Design, Web Applications, Programming Principles, Animations, Typography, Color Theory, Web Analytics and SEO, Debugging, Data Validation
Beginner · Specialization · 1 - 3 Months

Whizlabs
Skills you'll gain: Amazon Web Services, Containerization, Docker (Software), Kubernetes, Application Deployment, Cloud Deployment, CI/CD, Cloud Security, Hybrid Cloud Computing, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AWS Identity and Access Management (IAM), Linux Administration, Amazon Elastic Compute Cloud, Linux Servers, Cloud Deployment, Cloud Infrastructure, Amazon Web Services, Cloud Hosting, Cloud Computing, Front-End Web Development, Cloud Management, Linux, Ubuntu, Operating System Administration, Application Deployment, React.js, Event-Driven Programming, Javascript, User Interface (UI), Apache
Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Frontend Integration, Application Programming Interface (API), Restful API, Web Applications, Application Security, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Object Oriented Design, Data Structures, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Structures, Algorithms, Computer Programming, Computational Thinking, Program Development, Technical Design, Debugging, Problem Solving, Performance Tuning
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Jest (JavaScript Testing Framework), Unit Testing, Test Case, React.js, API Testing, Test Driven Development (TDD), Software Testing, Mockups, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: React.js, JavaScript Frameworks, Javascript and jQuery, Web Development Tools, Javascript, Software Design Patterns, Web Development, Application Development, Mobile Development
Advanced · Guided Project · Less Than 2 Hours