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In Spring Boot, Can we add @Service Annotation for Interface? if that interface is not implemented by any class

I created a interface which has not any implementations

@Service
public interface MyInterface{


    default void doSomething{
      System.out.print("print something");
    }
}

Can MyInterface be annotated by @Autowired?

@Autowired
MyInterface myInterFace;

following error displayed when it run

***************************
APPLICATION FAILED TO START
***************************

Description:

Field myInterFace in com.example.demo.controller.corejava.CoreJavaController required a bean of type 'com.example.demo.controller.corejava.MyInterface' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)

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Answer

No you can’t, because Spring tries to instantiate it to create a Bean (@Service), but it’s an Interface, so thats not possible.

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