OCJP exam

872842

Hi all,
Please tell me the reason for

o = new object();
doSomethingElse(null); // this line is available for garbage collection why?

Hope 2 have a reply soon.

Regards,
Minuri..

Edited by: 869839 on Jul 2, 2011 4:56 AM

EJP

No lines of code are ever available for garbage collection. Your question makes no sense. It cannot be answered in its present form.

872842

this is the complete code Sir,

public class GC{

private Object o;
private void doSomethingElse(Object obj){o=obj;}
public void doSomething(){
Object o=new Object();
doSomethingElse(o);
o=new Object();
doSomethingElse(null);
o=null;
}

}

Question is, when doSomething method is called, after which line does the object created "Object o=new Object();" become available for garbage collection?

regards ,
Minuri

EJP

What do you think? And why?

872842

I thought it is @ o=new Object();

Because the object has no reference. But the answer is below line.

EJP

Because it stores null into the member variable which previously held another reference to the local variable.

872842

Thank you............