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: CI/CD, Integration Testing, Continuous Integration, Docker (Software), Java, Cloud Deployment, Containerization, Software Design Patterns, Microservices, Build Tools, Cloud-Native Computing
★ 4.8 (12) · Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Spring Framework, Java, Spring Boot, Java Programming, Hibernate (Java), Web Development, Web Servers, Web Components, Servers, Application Deployment, Databases
★ 3.8 (13) · Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Apache Maven, Spring Framework, Microservices, Java Platform Enterprise Edition (J2EE), Spring Boot, Java, Java Programming, Build Tools, Back-End Web Development, Software Architecture, Server Side, Load Balancing, Cloud Development, Restful API, Web Applications, Scalability
★ 4.5 (52) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Oracle SQL Developer, Code Reusability, Oracle Databases, Computational Logic, Memory Management
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Object Oriented Design, Programming Principles, File I/O, Data Import/Export, Debugging, File Management, Memory Management
Beginner · Course · 3 - 6 Months

Skills you'll gain: Load Balancing, ASP.NET, Test Driven Development (TDD), Debugging, C# (Programming Language), Software Testing, Scalability, Performance Testing, Restful API, Unit Testing, Web Development, Microservices, .NET Framework, Object-Relational Mapping, Software Architecture, Web Applications, Test Engineering, Object Oriented Design, Cloud Deployment, Distributed Computing
★ 4.7 (243) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Java, Java Programming, Object Oriented Programming (OOP), Spring Boot, Hibernate (Java), Object Oriented Design, Spring Framework, Object-Relational Mapping, Database Management, Computer Programming, Web Development, Authorization (Computing), Database Development, Restful API, Role-Based Access Control (RBAC), Authentications, Debugging, Programming Principles, Development Environment
Beginner · Course · 3 - 6 Months

Skills you'll gain: Restful API, Application Security, Java, Java Programming, Application Frameworks, Model View Controller, Development Environment, Web Applications, Frontend Integration, Application Programming Interface (API), Apache Maven, Authorization (Computing), Authentications, Role-Based Access Control (RBAC), Configuration Management
★ 4.4 (36) · Intermediate · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, File I/O, Programming Principles, Computer Programming, Code Reusability, Data Structures, Software Engineering, Program Development, Data Access, Data Persistence, Unit Testing, Debugging, OS Process Management, Performance Tuning
Intermediate · Course · 1 - 3 Months

Heriot-Watt University
Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Computer Programming, Application Development, Program Development, Programming Principles, Computational Logic, Software Development, Software Development Life Cycle, Debugging
★ 5 (6) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: GitHub Copilot
Intermediate · Course · 3 - 6 Months

Oracle
Skills you'll gain: Java, Java Programming, Object Oriented Programming (OOP), Oracle Cloud, Computer Programming, Cloud Development, Integrated Development Environments, Programming Principles, Development Environment, Code Reusability
★ 4.6 (41) · Beginner · Course · 1 - 4 Weeks