Moving methods from one class to another?

I'm wondering if there is an easy way to move methods from one class to 
another?  The idea was to be able to copy all methods from one class to 
other classes, programatically.  The problem is of course the constant 
pool.  I was hoping there might be an easier way to do this, instead of 
having to find what constants the original IndexedInstructions were 
refrencing, and finding out where they are in the new class.   If anyone 
has any good ideas on how to do this an easy way, it would be 
appreciated.  Thank you for your time.

--Vince