How to decomplie a java class file when java application is running/launch?

I have a simple java application with some components being displayed, now i need to get the components instance names that are been created in that java application. How do i do that?
Eg: Button b1 = new button();
now how to write a java application to decompile this class file & return me the button instance ie "b1".

I think you wanna do two different things:
1. find out which objects were created at runtime.
2. decompile class file.
I'm no so sure why.
have you tried insrospecting the class using reflection ?
Here is a code snippet that prints class field names.
try{
  Class c = Class.forName("MyClass");
  java.lang.reflect.Field[]  f=    c.getFields();
  for (int i = 0;i<f.length; i++)
       System.out.println(f.getName());
catch(Exception e){ }
Regards
Joseph.

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