How to know a variable is accessed ??

Question

Hi all,
I have two Java Classes as follows :
public class A {
public int a =5;
and --
public class B {
public static void main(String[] args) {
System.out.println(new A().a);
Now i want to generate a log file (when the execution of main() method of class B ends) which tells me that "THE VARIABLE NAMED 'a' OF CLASS 'A' IS ACCESSED ONCE" .
PLEASE NOTE THAT I DON'T HAVE PERMISSION TO MODIFY THE SOURCE CODE OF EXISTING CLASS ..
So please tell me how to proceed to get the solution ..
Thanks.
Ganesh

Answer 1

actually i am developing an application which will determine the performance of any existing apps on basis of no of variable accessed ... it is only the high level overview of my application . If the variable is private and i have getters and setters for them then i am able to do that using byte code injection in those getter and setter methods .. but in the case of Public variable , i don't know exactly how JVM access the value of the variable..