Java-确定一个类对象代表一个类还是接口

 package com.tj;

 public class MyClass implements Cloneable {
     public static void main(String[] args) {
         Class cls = java.lang.String.class;
         System.out.println(cls.isInterface());

         cls = java.lang.Cloneable.class;
         System.out.println(cls.isInterface());
     }
 }