Interface Question

[Vidyavathi saravanan]

interface I {String s1 = "I";}
class A implements I {String s1 = "A";}
class B extends A {String s1 = "B";}
class C extends B {
  String s1 = "C";
  void printIt() {
    System.out.print(((A)this).s1 + ((B)this).s1 +
                     ((C)this).s1 + ((I)this).s1);
  }
  public static void main (String[] args) {new C().printIt();}
}

This is one of Dan's question. Answer given as ABCI.
My doubt is the inteface member s1 by default is 'public static final'. If that is the case, how come the subclasses are allowed to modify the variable s1. Please explain

[Barry Gaunt]

The subclasses are not modifiying the static final variable I.s1, they are redefining it. Each of the classes A,B and C has its very own String variable s1.
[ October 20, 2004: Message edited by: Barry Gaunt ]