Class isAnnotation() method in Java with Examples

Class isAnnotation() method in Java with Examples

Last Updated : 05 Jun, 2021

The isAnnotation() method of java.lang.Class class is used to check if this Class is the Annotation type. The method returns true if this Class is the Annotation type. It returns false otherwise.
Syntax:

public boolean isAnnotation()

Parameter: This method does not accept any parameter.
Return Value: This method returns true if this Class is the Annotation type. It returns false otherwise.
Below programs demonstrate the isAnnotation() method.
Example 1:

Java

// Java program to demonstrate isAnnotation() method

public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {

        // returns the Class object for this class
        Class myClass = Class.forName("Test");

        System.out.println("Class represented by myClass: "
                           + myClass.toString());

        // Check if this class is an annotation
        // using isAnnotation() method
        System.out.println("Is Test an annotation: "
                           + myClass.isAnnotation());
    }
}

Output:

Class represented by myClass: class Test
Is Test an annotation: false

Example 2:

Java

// Java program to demonstrate isAnnotation() method

// declaring an Annotation Type
@interface A {
    // Annotation element definitions
}

public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {

        // returns the Class object for A
        Class myClass = A.class;

        // Check if myClass is an annotation
        // using isAnnotation() method
        System.out.println("Is A an annotation: "
                           + myClass.isAnnotation());
    }
}

Output:

Is A an annotation: true

Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#isAnnotation--

Class isAnnotation() method in Java with Examples

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