GC Doubts

[Micheal John]

From web page

class A {
  private String name;
  private A otherA;
  public A(String name) {this.name = name;}
  public void other(A otherA) {this.otherA = otherA;}
  public A other() {return otherA;}
  public String toString() {return name;}
  protected void finalize() {System.out.print(name);}
}
class B {
  public static void m1() {
    A a1 = new A("A1"), a2 = new A("A2"), a3 = new A("A3"), a0 = a3;
    a1.other(a2); a2.other(a3); a3.other(a1);
    for(int i = 0; i<4; i++){System.out.print(a0 = a0.other());}
  }
  public static void main(String[] args) {m1(); System.gc();}
}
 
Which of the following could be a result of attempting to compile and run the program? 
 
a.  A1A2A3A1 
b.  A0A0A0A0A1A2A3 
c.  A1A2A3A1A2A3 
d.  A1A2A3A1A1A2A3 
e.  A1A2A3A1A3A2A1 
f.  A0A1A2A3A1A2A3 

Pls pls expalain.. very confusing..
[ December 12, 2006: Message edited by: Micheal John ]

[Barry Gaunt]

Have you read the answer here? If so, then what do you not understand?

[Micheal John]

For me the output is d. A1A2A3A1A1A2A3.

by calling A other():A1A2A3A1
by calling finalize: A1A2A3

but, they given the output as a,c,d,e...how..?
a.A1A2A3A1
c.A1A2A3A1A2A3
d.A1A2A3A1A1A2A3
e.A1A2A3A1A3A2A1

Why can't we choose only d?

and also in the above pgm, if I replaced the for loop with infinite loop, then A1A2A3A1 this sequence will print infinitely..correct?
[ December 12, 2006: Message edited by: Micheal John ]