// Example 30 from page 25 of Java Precisely second edition (The MIT Press 2005)
// Author: Peter Sestoft (sestoft@itu.dk)


class B                         // one non-static field vf, one static sf
{ int vf; static int sf; B(int i) { vf = i; sf = i+1; } }

class C extends B               // two non-static fields vf, one static sf
{ int vf; static int sf; C(int i) { super(i+20); vf = i; sf = i+2; } }

class D extends C               // three non-static fields vf
{ int vf; D(int i) { super(i+40); vf = i; sf = i+4; } }