How to deal with a Java serialized object whose package changed?

Question

I have a Java class that is stored in an HttpSession object that\'s serialized and transfered between servers in a cluster environment. For the purpose of this explanation,

Answer 1

This is always a big headache with Java serialization. As long as you're migrating your classes anyway, I'd recommend looking into migrating toward a different serialization mechanism like XStream. There's an interesting article on this at JavaLobby.