java - overriding hashCode, why is this.hashCode() not used? -

when overriding equals() , hashcode() methods in java why isn't used often:

public int hashcode() {     return (int) this.hashcode(); }

or above prime introduced:

public int hashcode() {     final int prime = 31; //31 common example     return (int) prime * this.hashcode(); }

is bad practise or not work?

the method:

public int hashcode() {     return (int) this.hashcode(); }

would lead stackoverflowerror because recurse infinitely, unless replace this super. second method has same problem.

in addition, casting value of type int int useless well.

if not provide useful new method, don't override it.

GHI