A single member annotation.

 

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

@Retention(RetentionPolicy.RUNTIME)  
@interface MySingle { 
  int value(); // this variable name must be value 
} 
 
public class Single { 
 
  // Annotate a method using a marker. 
  @MySingle(100) 
  public static void myMeth() { 
    Single ob = new Single(); 
 
    try { 
      Method m = ob.getClass().getMethod("myMeth"); 
 
      MySingle anno = m.getAnnotation(MySingle.class); 
 
      System.out.println(anno.value()); // displays 100 
 
    } catch (NoSuchMethodException exc) { 
       System.out.println("Method Not Found."); 
    } 
  } 
 
  public static void main(String args[]) { 
    myMeth(); 
  } 
}

1.	Simple annotation
2.	Annotation Viewer
3.	Annotation Demo
4.	An annotation type declaration.
5.	An annotation type declaration 2.
6.	Show all annotations for a class and a method.
7.	An annotation type declaration and include defaults.
8.	A marker annotation.
9.	Java Annotation: Deprecated and hierarchy
10.	Java Annotation: Annotation and Reflection
11.	Java annotation: Super Sub Tester
12.	Java Annotation Tester
13.	Override Annotation Tester
14.	Insert an annotation to suppress warning
15.	Suppress warning in ANT script
16.	How do I mark method as deprecated?
17.	What is SuppressWarnings annotation?
18.	Use Override annotation
19.	SuppressWarnings Annotation Tester

A single member annotation. : Annotation « Language Basics « Java

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