Question

I am working on SWT based GUI application. I have one object variable which is private.
this variable becomes null at some time in the run time of application. i want to know how to set a watchdog kind of debug so that i will come to know which thread is making it null.

Answer 1

1. I think you are talking about an Object Reference Variable of certain type of object.

In its setter method check for value.

Eg:

CustomObject cObject;

public void setObject(CustomObject o){


       if(o.equals(null)){


              // Save it in log, Sysout it... etc.
       }
        else{

              cObject = o;

         }

 }