Here you can find the source of hashCode(Object... objs)
public static int hashCode(Object... objs)
//package com.java2s; //License from project: Open Source License public class Main { public static int hashCode(Object... objs) { int code = 0; for (Object o : objs) { code ^= System.identityHashCode(o); }/*from w w w .j a va 2s . c o m*/ return code; } }