How to retain annotation of default method of interface after implementing and overriding said method
When I am overriding a default method of an interface which is annotated, the annotation is removed from the child method. I want to retain the annotation in the child even when the method is overridden. What is the reason for it getting removed?
MyAnnotation.java
@Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface MyAnnotation { public String config(); } MyInterface,java
public interface MyInterface { @MyAnnotation(config="myConfig") public default String getMyVal() { return null; } @MyAnnotation(config="myConfig") public default String getMyVal2() { return null; } } MyModel.java
public class MyModel implements MyInterface { @Override public String getMyVal() { return "MyVal"; } } MainRunner.java
public class MainRunner { public static void main(String[] args) { Arrays.stream(MyModel.class.getMethods()).forEach( method -> Arrays.stream(method.getAnnotations()).forEach(ann-> System.out.println(method + " --- " + ann.annotationType())) ); } } Output
public native int java.lang.Object.hashCode() — interface jdk.internal.HotSpotIntrinsicCandidate public final native java.lang.Class java.lang.Object.getClass() — interface jdk.internal.HotSpotIntrinsicCandidate public final native void java.lang.Object.notify() — interface jdk.internal.HotSpotIntrinsicCandidate public final native void java.lang.Object.notifyAll() — interface jdk.internal.HotSpotIntrinsicCandidate public default java.lang.String com.javaconcepts.annotations.MyInterface.getMyVal2() — interface com.javaconcepts.annotations.MyAnnotation
Appreciate the help. Thanks.
PS: I tried searching but having overridden and annotations in the search gave results for overridden annotation.
