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Garbage Collection Doubt

aresh babu
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Joined: Aug 31, 2008
Posts: 65
How can we stop garbage collecting a user define object permanantly without assigning the references once again to that object?



Thanks in advance

Francisco Montes
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Joined: Sep 30, 2009
Posts: 30
My understanding:

An object is eligible for garbage collection as soon as there is no references to it from any live thread.

So, unless you override the finally method of that object and make a reference variable (in a live thread) point to it... it may get garbage collected.


SCJP 1.6
Embla Tingeling
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Joined: Oct 22, 2009
Posts: 237
aresh babu wrote:How can we stop garbage collecting a user define object permanantly without assigning the references once again to that object?


You assign the object reference to a variable that's static and final, like

static final Object o = new Objcet(); // object will never be GCed
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 38025
    
  22
Francisco Montes wrote: . . . So, unless you override the finally method of that object and make a reference variable (in a live thread) point to it... it may get garbage collected.
By a "finally method," do you mean a finally block or a final reference?
Paul Clapham
Bartender

Joined: Oct 14, 2005
Posts: 18541
    
    8

Campbell Ritchie wrote:
Francisco Montes wrote: . . . So, unless you override the finally method of that object and make a reference variable (in a live thread) point to it... it may get garbage collected.
By a "finally method," do you mean a finally block or a final reference?

I'm guessing that Francisco meant the "finalize" method.
Francisco Montes
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Joined: Sep 30, 2009
Posts: 30
True, I meant "finalize" (oops). Thanks Paul. :-)
 
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