Class getInterfaces() method in Java with Examples (original) (raw)

Last Updated : 27 Jan, 2022

The getInterfaces() method of java.lang.Class class is used to get the interfaces directly implemented by this entity. This entity can be a class or an interface. The method returns an array of interfaces directly implemented by this entity.
Syntax:

public Class[] getInterfaces()

Parameter: This method does not accept any parameter.
Return Value: This method returns an array of interfaces directly implemented by this entity.
Below programs demonstrate the getInterfaces() method.
Example 1:

Java

import java.util.*;

public class Test {

`` public static void main(String[] args)

`` throws ClassNotFoundException

`` {

`` Class myClass = Class.forName("Test");

`` System.out.println("Class represented by myClass: "

`` + myClass.toString());

`` System.out.println(

`` "Interfaces of myClass: "

`` + Arrays.toString(

`` myClass.getInterfaces()));

`` }

}

Output:

Class represented by myClass: class Test Interfaces of myClass: []

Example 2:

Java

import java.util.*;

interface Arr {

}

public class Test implements Arr {

`` public static void main(String[] args)

`` throws ClassNotFoundException

`` {

`` Class myClass = Class.forName("Test");

`` System.out.println(

`` "Interfaces of myClass: "

`` + Arrays.toString(

`` myClass.getInterfaces()));

`` }

}

Output:

Interfaces of myClass: [interface Arr]

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

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