Project work… serialization

Today I had a project work review session with my students. This one made me jump on my chair. A student is reporting on the problems he has on his software development project work, and finally here he comes with this small concern:
“I was serializing the data we needed and suddenly Java sent out a warning about not to serialize the classes implementing the UI. Why is that?”
I was going to suggest to serialize his project work and ship it to another university.

To learn more about serialization of object in OO see: http://en.wikipedia.org/wiki/Serialization.