Java Foundation static statics Q in polymorphism, when a subclass static method overrides a parent class static method, which method is called by the parent class reference?

Polymorphic

 PackageCom.swift.jiekou; Public classJicheng_tuotai_jingtai_diaoyong { Public Static voidMain (string[] args) {Fu F=NewZi ();    F.show (); }}classfu{Static intX=1;  Public Static voidShow () {System.out.println ("Method of the parent class" +x); }}classZiextendsfu{Static intx=2;  Public Static voidShow () {System.out.println ("Methods of subclasses" +x); }}

Java Foundation static statics Q in polymorphism, when a subclass static method overrides a parent class static method, which method is called by the parent class reference?