Java hashing

[NegativeSpace]

Hi,

I've written a method to hash a String into a long, like so:

private static long stringToHash(String str){
        long h = 0;
 
        for (int i = 0; i < str.length(); ++i)
            h = 31 * h + str.charAt(i);
 
        return h;
}
 

This works great. However, I am having difficulty working out how to go from the long back to the original String.

Can anyone help?

Regards.

[Ganon11]

I'm not sure that hash code goes both ways - that is, I don't think an object can be reconstructed from its hash code.