HiRecently at an interview I was asked the following question:Create a hashtable A, assign key value pairs to it and then set A to null. Will it be garbage collected?Please reply.

Questions by deepti_bellubbi

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tommckinley

  • Feb 15th, 2007
 

The hashtable object A will be garbage collected, but your key or value objects may still exist if they were assigned to a variable still in scope.

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vinaymudgil007

  • Jun 11th, 2008
 

Yes the hashtable would be avaliable for garbage collection BUT when actually is would be collected that would depend on JVM garbage collection cycle.

vinny

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jimmy514in

  • Oct 31st, 2010
 

Objects which have null references are garbage collected ..

But you can just request the garbage collector algo to start..
you cannot command it..
so when it would be collected is not known..
Also, a null reference attached to object is called as weak reference
And weak references are garbage collected.

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