How to implement something similar to the @Override java annotation?

Question

With this jdk code in ../java/lang/Override.java,

package java.lang;
import java.lang.annotation.*;
@Target(ElementType.METHOD)
@Retention(Retentio         


        

Answer 1

The implementation that triggers the compile error doesn't lie in the annotation, it lies in the Java compiler.

If you want to write your own similar annotation processor, you would use the annotation processor API: http://docs.oracle.com/javase/7/docs/api/javax/annotation/processing/Processor.html