sujatham

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• Jul 28th, 2007

 

Ans):if a composite object becomes unreachable, then its constituent objects also become unreachable, barring any reachable references to the constituent objects.

ex:objects o1, o2, and o3 form a circular list(object o1 have reference to o2,object o2 have reference to  o3 and object o3 have reference to o1) , and they do not have any reachable references.These objects are called  "object iceland". Thus, these objects are all eligible.