use of identityHashCode() of System class

Hi,
    As we know that we can override the hashCode() method of Object class with our own representation,What if i want to get the original hashCode() of a specific object. For that jdk provides a method inside of System class. Please go through the following example.


public class HashCodeDemo {

    @Override
    public int hashCode() {
        return 20;
    }

    public static void main(String ar[]) {

        HashCodeDemo hashObj = new HashCodeDemo();
        System.out.println(hashObj);
        System.out.println(hashObj.toString());
        System.out.println(hashObj.hashCode());
        System.out.println(System.identityHashCode(hashObj));

    }
}

OutPut
--------
javaapplications.HashCodeDemo@14
javaapplications.HashCodeDemo@14
20
4072869


Thanks

Rajesh Kumar Yuvaraj