title: Java Object Serialization - How to add member variable?
body: <p>I have an array of objects that I am able to read and write to disk.  But now I want to add a member variable to my class.  If I add the member variable, I'll get a class incompatible error and  I won't be able to read my serialized objects.  Is there a way to modify the member variables of a class used for serialization without losing the ability to read persisted objects...or an easy way to convert the persisted objects to the new class?</p>