java - Object.hashCode() algorithm

Question

I'm looking for the algorithm of Object.hashCode().

This code is native in Object.java.

Is this because

(a) the code is in assembly-- never was in Java or any other HLL at all

or

(b) it simply isn't disclosed

?

In either case, I am looking to get hold of the algorithm (pseudo-code or some detailed explanation) of "how hashCode() is calculated"-- what are the params going into its calculation and the calculation itself?

Please note: It's the hashCode() of Object i'm looking for-- not another like that of String or hashMap/table.

//==========================================================================

the new Java docs-- jdk 8 now saying

"The value returned by hashCode() is the object's hash code, which is the object's memory address in hexadecimal." 

Answer 1

Native hashCode method implementation depends on the JVM. By default in HotSpot it returns random number, you can check it in the source code (function get_next_hash)