A marker annotation. : Annotation « Language Basics « Java

A marker annotation.

A marker annotation.

import java.lang.annotation.*; 
import java.lang.reflect.*; 

@interface MyMarker { } 
public class Marker { 
  // Annotate a method using a marker. 
  // Notice that no ( ) is needed. 
  public static void myMeth() { 
    Marker ob = new Marker(); 
    try { 
      Method m = ob.getClass().getMethod("myMeth"); 
      // Determine if the annotation is present. 
        System.out.println("MyMarker is present.");  
    } catch (NoSuchMethodException exc) { 
       System.out.println("Method Not Found."); 
  public static void main(String args[]) { 


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