class Father{
private int i=0;
public void f(){
System.out.println("Father()");
}
}
class Son extends Father{
public void f(){
System.out.println("Son()");
}
}
public class NullAbstract{
public static void main(String[] args){
Son s=new Son();
((Father)s).f();
////////////Son()
Father f=new Son();
f.f();
///////////Son(
}
}
class Father{ private int i=0; public void f(){ System.out.println("Father()"); } } class Son extends Father{ public void f(){ System.out.println("Son()"); } } public class NullAbstract{ public static void main(String[] args){ Son s=new Son(); ((Fath