Difference between @Component, @Service, @Repository, and @Controller annotations in Spring

The key difference between the @Component, @Service, @Repository, and @Controller annotations in Spring lies in their intended purpose and use within the application.

• @Component: Acts as a generic stereotype annotation for any Spring-managed component.
• @Service: Indicates that a class is a service layer component in the business logic.
• @Repository: Marks a class as a data access component or repository, typically used for database operations.
• @Controller: Identifies a class as a controller in the MVC pattern, responsible for processing and responding to requests.

By using these annotations appropriately, you can effectively structure your Spring application and communicate the roles of different components within the system.

It's essential to choose the correct annotation based on the functionality and purpose of the component to ensure clarity and consistency in your codebase.