Core Java courses can help you learn object-oriented programming, exception handling, multithreading, and Java Collections. 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: JUnit, Spring Framework, Spring Boot, Java Programming, Java, Apache Maven, Hibernate (Java), Unit Testing, Gradle, Microservices, Build Tools, Object-Relational Mapping, Software Testing, Cloud Development, Functional Design
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Debugging, Java Programming, Java, Programming Principles, Computer Programming, Computational Logic, Computer Science, Data Storage
★ 4.5 (118) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Software Documentation, Java Programming, Java, Technical Documentation, Computer Programming, Programming Principles, Code Reusability, Computer Science
★ 4.1 (21) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Java Programming, Code Reusability, Java, Computer Programming, Data Validation, Data Integrity, Computer Science
★ 4.1 (21) · Intermediate · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Git (Version Control System), JUnit, Android Studio, Android Development, Unit Testing, Android (Operating System), Version Control, Maintainability, Software Design Patterns, Test Automation, File I/O, Object Oriented Programming (OOP), Integration Testing, Test Driven Development (TDD), Mobile Development, Software Testing, Testability, Software Engineering, Test Tools, Java Programming
★ 4.5 (3.7K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Computer Programming, Virtual Machines, Package and Software Management, Memory Management
★ 4.7 (533) · Beginner · Course · 1 - 4 Weeks

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

Skills you'll gain: JUnit, Unit Testing, Software Quality Assurance, Development Testing, Integrated Development Environments, Software Testing, Quality Assurance, Java, Software Development Tools, Java Programming, Performance Tuning, Debugging, Performance Testing, Application Performance Management
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: JUnit, Java Programming, Unit Testing, Java, Test Script Development, Program Development, Software Testing, Verification And Validation, Quality Assurance, Software Quality Assurance, Test Case, Systems Development, Software Development, Software Engineering, Application Development, Data Validation, Object Oriented Programming (OOP), Object Oriented Design, User Interface (UI), Data Modeling
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Apache Maven, Java Programming, Java, Build Tools, Database Design, Database Development, Database Application, Eclipse (Software), Full-Stack Web Development, CI/CD, Web Applications, Code Reusability, Continuous Integration, Model View Controller, Web Development, Authentications, Authorization (Computing), Application Development, UI Components, Automation
Beginner · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Restful API, Object Oriented Programming (OOP), Object Oriented Design, Java Programming, Spring Framework, Java, Spring Boot, API Design, Application Programming Interface (API), Hibernate (Java), Data Validation, Development Testing, Verification And Validation, Authentications, Model View Controller, Back-End Web Development, Computer Programming, Code Reusability, Object-Relational Mapping, Server Side
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Object Oriented Design, Data Validation, Test Script Development, Object Oriented Programming (OOP), Test Automation, Application Design, Application Development, Software Testing, Test Case, Data Modeling, Verification And Validation, User Interface (UI), Business Logic, Maintainability, Data Integrity
Beginner · Course · 1 - 4 Weeks