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: Object Oriented Design, Object Oriented Programming (OOP), Unit Testing, Java, Test Automation, Software Development, Development Testing, Application Design, Software Testing, Application Development, System Design and Implementation, Data Validation, User Interface (UI), Debugging, Data Integrity, Business Logic
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Database Application, Full-Stack Web Development, Web Applications, Model View Controller, Authentications, Business Logic, SQL
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Apache Maven, Maintainability, Gradle, Java, Software Design, Software Design Patterns, Software Architecture, Object Oriented Design, Object Oriented Programming (OOP), API Design, Machine Learning Methods, Programming Principles, Integration Testing, Dependency Analysis, User Interface (UI) Design, Design Strategies, Program Evaluation, Automation
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Apache Maven, Spring Boot, Model View Controller, Unit Testing, Microservices, Application Development, Spring Framework, Redis, Restful API, YAML, Java, Java Programming, MongoDB, Application Deployment, NoSQL, Ajax, Hibernate (Java), Data Persistence, Software Testing
Beginner · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Java Programming, Java, Application Servers, Web Applications, Development Environment, Object Oriented Programming (OOP), Application Development, Eclipse (Software), Program Development, Computer Programming, Object Oriented Design, Mobile Development, UI Components, Event-Driven Programming, User Interface (UI), Virtual Machines, Data Structures, Command-Line Interface, Software Installation
Intermediate · Specialization · 3 - 6 Months

LearnKartS
Skills you'll gain: JUnit, File I/O, Unit Testing, Program Development, Debugging, Java, Maintainability, Software Development, Secure Coding, Software Testing, Test Case, Authentications, Application Security, Cryptography, Object Oriented Programming (OOP), Eclipse (Software), Integrated Development Environments, Encryption, Data Structures
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Debugging, Java Programming, Java, Programming Principles, Computer Programming, Integrated Development Environments, Computer Science, Data Structures
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Algorithms, Debugging, Java, Computer Programming, Software Design, Programming Principles, Object Oriented Programming (OOP), Program Development, Data Analysis Software, Data Import/Export, File I/O, Integrated Development Environments
Beginner · Course · 1 - 3 Months
Codio
Skills you'll gain: Apache Maven, JSON, JUnit, Java Programming, Java, Restful API, Integrated Development Environments, Programming Principles, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
Intermediate · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Debugging, Object Oriented Programming (OOP), Java, Teaching, Programming Principles, Computer Programming, Integrated Development Environments, Digital pedagogy
Beginner · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: Ajax, Web Design, Java Platform Enterprise Edition (J2EE), Cascading Style Sheets (CSS), Web Applications, Scripting, Javascript and jQuery, Web Development, Java, Hypertext Markup Language (HTML), Middleware, Model View Controller, Hibernate (Java), Service Oriented Architecture
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Object Oriented Programming (OOP), Java, Software Development Life Cycle, Program Development, Computer Programming, Development Environment, Software Development, Integrated Development Environments, Command-Line Interface, Linux Commands
Beginner · Course · 1 - 4 Weeks