class HappyGarbage01
{
public static void main(String args[])
{
HappyGarbage01 h = new HappyGarbage01();
h.methodA(); /* Line 6 */
}
Object methodA()
{
Object obj1 = new Object();
Object [] obj2 = new Object[1];
obj2[0] = obj1;
obj1 = null;
return obj2[0];
}
}Where will be the most chance of the garbage collector being invoked?

Question

Option D is correct. Garbage collection takes place after the method has returned its reference to the object. The method returns to line 6, there is no reference to store the return value. so garbage collection takes place after line 6.Option A is wrong. Because the reference toobj1is stored inobj2[0]. The Objectobj1still exists on the heap and can be accessed by an active thread through the reference stored inobj2[0].Option B is wrong. Because it is only one of the references to the objectobj1, the other reference is maintained inobj2[0].Option C is wrong. The garbage collector will not be called here because a reference to the object is being maintained and returned inobj2[0].

Accepted Answer

After line 11

Answer

After line 9

Answer

After line 10

Answer

Garbage collector never invoked inmethodA()