Java.lang.Class.getInterfaces() Method


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Description

The java.lang.Class.getInterfaces() determines the interfaces implemented by the class or interface represented by this object.

Declaration

Following is the declaration for java.lang.Class.getInterfaces() method

public Class<?>[] getInterfaces()

Parameters

NA

Return Value

This method returns an array of interfaces implemented by this class.

Exception

NA

Example

The following example shows the usage of java.lang.Class.getInterfaces() method.

Live Demo
package com.tutorialspoint;

import java.lang.*;
import java.util.*;

public class ClassDemo {

   public static void main(String[] args) {
      show(Thread.class);
   }
 
   public static void show(Class cls) {
      System.out.println("Class = " + cls.getName());
  
      Class[] c = cls.getClasses();
      System.out.println("Classes = " + Arrays.asList(c));
    
      // returns an array of interfaces
      Class[] i = cls.getInterfaces();
      System.out.println("Interfaces = " + Arrays.asList(i));
   }
}

Let us compile and run the above program, this will produce the following result −

Class = java.lang.Thread
Classes = [interface java.lang.Thread$UncaughtExceptionHandler, class java.lang.Thread$State]
Interfaces = [interface java.lang.Runnable]

java_lang_class.htm

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