// Dynamic Proxy나 AOP 대체로 가능할 듯.


(annotation 정의)
import java.lang.annotation.*;

@Inherited
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.METHOD })
public @interface MyAnnotation{
	String value() default "MyAnnotation";
}

(annotation 적용확인)

import java.lang.reflect.Method;
import MyAnnotation;

public class UseAnnotation{

	@MyAnnotation(value="Annotation Test")
	public void annotationTest(){
		System.out.println("Annotation Method");
	}

	public static void main(String[] args){
	
		Method[] ms = UseAnnotation.class.getMethods();

		for(Method m: methods){
			MyAnnotation an = m.getAnnotation(MyAnnotation.class);
			
			if(an != null){
				System.out.println("ANNOTATION : "+an.value());
				m.invoke(new UseAnnotation(), null);
			}
		}
	}

}