How many are eligible for GC

[Tina Tibrewal]

   
for(int=10; i>= 0; i--)
{
String tmp = Integer.toString(i);
System.out.println(tmp);
}
System.out.println("BOOM"); //1

How many objects are elgible for GC when control reaches //1
The answer says 10.
According to me it should be 11.
Can anyone explain?

[Chandra Bhatt]

Hi Tina,

for(int i=10; i>= 0; i--) {
    String tmp = Integer.toString(i);
    System.out.println(tmp);
}
System.out.println("BOOM"); //1

I stand in the same group as you Tina;
I think in the same way, as you:
What I think:

11 objects will be eligible for GC because tmp is local to
the for block and 11 objects are created inside the block,
and outside that block we don't have reference to the lastly
created Object, so 11 will be eligible for GC.

If we modify the code as:

String tmp;
for(int i=10; i>= 0; i--) {
    tmp = Integer.toString(i);
    System.out.println(tmp);
}
System.out.println("BOOM"); //1

Then we can say 10 objects are eligible for GC.


Tina, don't you think these GC questions are killing!
See my latest question on "GC"!


Regards,
cmbhatt
[ April 21, 2007: Message edited by: Chandra Bhatt ]

[Arad Chear]

ask your self :

how many object unreachable after running this code ?

12

11 Objects inside for loop + "BOOM"

[Padma Asrani]

Hello

The question explicitly says when control reaches to line 1, so we can't take "Boom" into account. i guess 11 is the correct answer.

Regards
Padma

[Burkhard Hassel]

Eisa wrote:

12

11 Objects inside for loop + "BOOM"

I found it funny! Best possible answer to this!
Bu.

[Chandra Bhatt]

Hey Eisa,

Don't count Boom, it is on the String constant pool, GC has nothing to do with that. And "Boom" was not created using "new" operator.

Now ask yourself how many object eligible to GC.

Padma,
I do agree with you!
Cheers,



Regards,
cmbhatt

[Arad Chear]

sorry guys

i confused i was in the same time saw an question about toString

and i thought its here , by the way

if BOOM not used after this code is it available for GC ?

in another words :

is the String pool will Grabaged if there is no access to it throw the program ?

Hassel iam still baby in java and my exam after 4 days

no body all time is true