Garbage Collection

[Rajat Asani]

1. class Rubbish {
2.   public static void main(String [] args) {
3.     Rubbish r1 = new Rubbish();
4.     Rubbish r2 = new Rubbish();
5.     Rubbish r3 = new Rubbish();
6.     Rubbish r4 = r2;
7.     Rubbish r5 = r4;
8.     r2 = null;
9.     r4 = r2;
10.     r1 = r5;
11.     // do stuff
12.   }
13. }
 

Source--Sun microsystems learningConnection

Question---At line 12 how many objects are elegible for garbage collection.

Answer give--1

My answer----3 ie all the objects.
Since the main method ends at line 12, shouldn't all the objects be eligible for garbage collection??

[Henry Wong]

My answer----3 ie all the objects.
Since the main method ends at line 12, shouldn't all the objects be eligible for garbage collection??

Maybe the question is *not* a trick question and is an asking you to actually calculate how many objects are eligible for GC, before the method exits.

Henry

[Rajat Asani]

Yes I think you are right.
Only then the answer given makes sense.