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Java program to check an annotation type using the isAnnotation() method

Java example to check an annotation type using the isAnnotation() method.
Submitted by Nidhi, on April 30, 2022

Problem Solution:

In this program, we will check an annotation type using the isAnnotation() method and print the appropriate message.

Program/Source Code:

The source code to check an annotation type using the isAnnotation() method is given below. The given program is compiled and executed successfully.

// Java program to check an annotation type 
// using isAnnotation() method

@interface A {}
public class Main {
  public static void main(String[] args) throws ClassNotFoundException {
    Class cls1 = A.class;
    Class cls2 = Main.class;

    if (cls1.isAnnotation())
      System.out.println("The cls1 is representing an annotation type");
    else
      System.out.println("The cls1 is not representing an annotation type");

    if (cls2.isAnnotation())
      System.out.println("The cls2 is representing an annotation type");
    else
      System.out.println("The cls2 is not representing an annotation type");
  }
}

Output:

The cls1 is representing an annotation type
The cls2 is not representing an annotation type

Explanation:

In the above program, we created a public class Main that contains a main() method. The main() method is the entry point for the program. Here, we checked an annotation type using the isAnnotation() method and printed the appropriate message.

The isAnnotation() method returns true if it is an annotation type otherwise it returns false. An interface is an annotation type.

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