garbage collection

[vini singh]

Assume that there is a class MyClass and it have 2 functions f() and g().

MyClass c1=new MyClass();
MyClass c2=new MyClass();
f(c1);
c1=null;
c2=c1;
g();

How many objects will be eligible for garbage collection by the time method g() is invoked?

output: information is insufficient to predict the result.

please explain.

[sudipto shekhar]

Two.

[Ruben Soto]

You can't tell for sure. The object referenced to by c1 originally might not be eligible for garbage collection, because it might have been assigned to a different reference inside f(). Also, we can't tell if there are additional objects that could be garbage collected inside MyClass without knowing the structure of the class.

[Ravikanth kolli]

well as such you cannot be sure how many objects are available for GC with the given data, unless we know what the methods f and g are.