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.

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

EDUCBA
Skills you'll gain: IntelliJ IDEA, Apache Maven, Build Tools, Integrated Development Environments, Software Development Tools, Version Control, Software Engineering Tools, Git (Version Control System), Development Environment, Debugging, Scripting Languages, Visualization (Computer Graphics), Databases, Relational Databases
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Apache Hadoop, Big Data, Apache Hive, Apache Spark, NoSQL, Data Infrastructure, File Systems, Data Processing, Data Management, Analytics, Data Science, SQL, Query Languages, Data Manipulation, Java, Data Structures, Distributed Computing, Scripting Languages, Performance Tuning, Software Architecture
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Jenkins, CI/CD, Continuous Integration, DevOps, Application Deployment, Devops Tools, Continuous Delivery, Spring Framework, Software Configuration Management, Build Tools, Version Control
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Spring Framework, Hibernate (Java), Spring Boot, Java, Object-Relational Mapping, Database Management, Application Frameworks, Data Access, Apache Maven, SQL, Object Oriented Programming (OOP), Model View Controller, Functional Design
Intermediate · Course · 1 - 4 Weeks
University of Glasgow
Skills you'll gain: Computational Thinking, Javascript, Programming Principles, Computer Programming, Computer Graphics, Animations, Debugging, Scripting Languages
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Spring Framework, Spring Boot, Model View Controller, Hibernate (Java), Java, Web Applications, Object-Relational Mapping, Application Deployment, Application Security, Database Application, Software Development Tools, Authentications, Development Environment, Authorization (Computing), Query Languages
Intermediate · Course · 3 - 6 Months

Skills you'll gain: React.js, Jest (JavaScript Testing Framework), JavaScript Frameworks, Front-End Web Development, Unit Testing, UI Components, Event-Driven Programming, Javascript, User Interface (UI), Software Testing, Application Programming Interface (API)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Docker (Software), Containerization, Kubernetes, Development Environment, Spring Boot, Application Deployment, DevOps, Microservices, Debugging, MongoDB, Restful API
Beginner · Course · 1 - 3 Months

Skills you'll gain: Model View Controller, Web Development Tools, Web Applications, JavaScript Frameworks, Data Validation, Javascript, Web Development
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Spring Boot, Configuration Management, JUnit, Java Programming, Java, Application Design, Unit Testing, Middleware, Application Programming Interface (API), Service Oriented Architecture, Software Design Patterns
Advanced · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React Redux, React.js, Javascript, Web Development Tools, Middleware, Web Development
Intermediate · Course · 1 - 4 Weeks