Java Class getAnnotation() Method

The getAnnotation() method of java Class class returns this element's annotation for the specified type if such an annotation is present, otherwise returns the null.

Syntax

Parameter

A - the type of the annotation to query for and return if present

Returns

This element's annotation for the specified type if such an annotation is present, else return null.

Throws

NullPointerException

Example 1

import java.lang.*;  //import statements...
import  java.lang.annotation.Retention;  // import  Retention of annotation class
import java.lang.annotation.RetentionPolicy; // import  RetentionPolicy of annotation class
import java.lang.reflect.Method;


 @Retention(RetentionPolicy.RUNTIME)
 @interface Demo1 {
   String str();
   int val();
}

public class ClassgetAnnotationExample1 {

   @Demo1(str = "Demo_Annotation", val = 100)
  
   public static void example() {
      ClassgetAnnotationExample1 obj = new ClassgetAnnotationExample1();

      try {
         Class c = obj.getClass();  //get the class

         Method m = c.getMethod("example");

         Demo1 annotation = m.getAnnotation(Demo1.class);

         System.out.println(annotation.str() + " " + annotation.val()); //print annotation name and value
      } catch (NoSuchMethodException exc) {
         exc.printStackTrace();
      }
   }
   public static void main(String args[]) {
      example();
   }
}

Test it Now

Output: