Assume N and hashCode are positive and N is an integer of power of 2, hashCode % N is the same as hashCode & (N - 1) is true.
What type of value is returned by the hashCode () method?
HashCode(), in its simplest form, simply returns an integer value produced by a hashing algorithm. The hash code must match for objects that are the same (as determined by their equals()).
They check hash values using the hashCode() function.
If equals() is overridden, hashCode() need not be as well. If hashCode() is overridden, equals() does not need to be as well. No matter what object called hashCode(), it can always return the same result.
The hashCode() method's declaration is provided below: hashCode() is a public function that is available to everyone (int value)
