How Garbage Collector identifies the objects which are not
in use?
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Answer Posted / kiran vaidya
When any new object is created, it has two references
assigned, one is present on the application's stack area
and other is on the GC's stack. With creation of any new
object, it will be automatically assigned the generation as
0.
Now, there are two cases where object's reference is
removed from application stack.
1.When programmer assignes any object as 'null', the
reference on the application's stack to the specific object
is automatically removed.
2.When the function scope is ended, the references to those
objects in the function are automatically removed from
stack.
Now, GC compares the entries of references at its own
stack Vs the entries of references available at the
application stack.
By comparing them, it finds the object's references in
its stack to which, no match was found in the application
stack and releases memory allocated to them.
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