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: CI/CD, Integration Testing, Continuous Integration, Docker (Software), Java, Containerization, Software Design Patterns, Development Testing, Microservices, Object Oriented Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Test Driven Development (TDD), Version Control, Git (Version Control System), GitHub, Performance Tuning, Unit Testing, Data Structures, Java Programming, Development Testing, Algorithms, Program Development, Software Testing, Java, Computer Programming, Software Development, Programming Principles, Debugging, Scalability
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Java Platform Enterprise Edition (J2EE), Application Deployment, Web Applications, Application Servers, Java, Object-Relational Mapping, Application Development, Web Development, Web Servers, Server Side, Application Frameworks, Scripting, Middleware, Javascript and jQuery, Data Storage, Apache Tomcat, Session Initiation Protocols, Enterprise Architecture, Hypertext Markup Language (HTML), Model View Controller
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Prompt Patterns, ChatGPT, Generative AI, Large Language Modeling, Responsible AI, Restful API, Application Deployment, Artificial Intelligence, Software Development Tools, Software Testing, Test Automation, Software Development, DevSecOps, Application Security, CI/CD, Application Programming Interface (API), AI Product Strategy, Artificial Intelligence and Machine Learning (AI/ML), Java Programming
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Database Design, Continuous Integration, Restful API, User Requirements Documents, Docker (Software), Model View Controller, Front-End Web Development, Databases, User Story, CI/CD, Java, Java Programming, Hibernate (Java), Database Application, HTML and CSS, Full-Stack Web Development, Spring Boot, Java Platform Enterprise Edition (J2EE), Back-End Web Development, Software Design Documents
Advanced · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: JUnit, Test Driven Development (TDD), Unit Testing, Testability, Test Case, Software Testing, Eclipse (Software), Test Data, Development Testing, Test Automation, Test Execution Engine, Integrated Development Environments, Java, Test Tools
Intermediate · Specialization · 1 - 3 Months

Rice University
Skills you'll gain: Apache Kafka, Apache Spark, Apache Hadoop, Distributed Computing, Dataflow, Java Programming, Java, Middleware, Scala Programming, Data Structures, System Programming, Programming Principles, Servers, Application Frameworks, Debugging, Algorithms, Performance Tuning, Network Protocols, Computer Science
Intermediate · Specialization · 3 - 6 Months

LearnKartS
Skills you'll gain: Java Programming, Object Oriented Programming (OOP), Object Oriented Design, Java, Maintainability, Programming Principles, Computer Programming, Application Development, Android Development, Software Design Patterns, Debugging
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Spring Boot, Spring Framework, Java Programming, Java, Java Platform Enterprise Edition (J2EE), Application Servers, Full-Stack Web Development, Hibernate (Java), Data Access, Web Services, Server Side, Performance Tuning, Web Applications, Model View Controller, Object-Relational Mapping, Restful API, SQL, Transaction Processing
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Computer Programming, Object Oriented Design, Development Environment, Programming Principles
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Application Development, Computer Programming, User Interface (UI), Programming Principles, Databases, System Design and Implementation, File Management, Data Validation
Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Spring Framework, Model View Controller, Java Platform Enterprise Edition (J2EE), Application Performance Management, Software Design Patterns, Java Programming, Java, Enterprise Architecture, Secure Coding, Software Architecture, Application Security, Security Assertion Markup Language (SAML), Dependency Analysis, Web Applications, Continuous Monitoring, OS Process Management, Debugging, Maintainability, Object Oriented Programming (OOP), Performance Tuning
Intermediate · Specialization · 3 - 6 Months