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Question in Garbage collection

 
Ranch Hand
Posts: 56
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Please explain me the output of the following snippet(if possible with a diagram).

class I {
private I other;
public void other(I i) {other = i;}
}
class J {
private void m1() {
I i1 = new I(), i2 = new I();
I i3 = new I(), i4 = new I();
i1.other(i3); i2.other(i1);
i3.other(i2); i4.other(i4);
}
public static void main (String[] args) {
new J().m1();
}}

Which object is not eligible for garbage collection after method m1 returns?

a. i1
b. i2
c. i3
d. i4
e. Compile-time error
f. Run-time error
g. None of the above

The answer is None of the above.
 
Greenhorn
Posts: 22
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Since all the objects are created within the heap(in this case , the other happens to be an object of type I, the answer "None of the above is correct".
 
Premkumar Gopal
Greenhorn
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Shankar,
You can refer to KBs book (pp 435 - Section "Isolating a Reference" ) talks in depth

Thanks
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