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: Restful API, Application Security, Java, Application Frameworks, Model View Controller, Development Environment, Web Applications, Application Programming Interface (API), Apache Maven, Authorization (Computing), Authentications
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Java, Mobile Development, Java Programming, Object Oriented Programming (OOP), Application Frameworks, Android Development, Application Development, Program Development, Software Development
Intermediate · Guided Project · Less Than 2 Hours

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

Peking University
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Code Review, Program Development, Maintainability, Programming Principles, Computer Programming, Test Driven Development (TDD), UI Components, Debugging, C and C++, User Interface (UI), Application Development, Event-Driven Programming, Algorithms, Data Structures, File Management
Intermediate · Course · 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

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

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

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

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, Server Side, Debugging, Maintainability, Performance Tuning
Intermediate · Specialization · 3 - 6 Months

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

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: Stored Procedure, Hibernate (Java), PL/SQL, Relational Databases, Object-Relational Mapping, SQL, Data Access, Java Platform Enterprise Edition (J2EE), Database Design, Databases, Java, Data Manipulation, Data Mapping, Java Programming, JUnit, Object Oriented Programming (OOP), Query Languages, Database Management, Database Systems, Transaction Processing
Beginner · Specialization · 1 - 3 Months