loading java class configuration from file

Hi guys
i have a program that generates classes by user demand. And I want to
save those classes in to file so when this user will ask a particular
configuration that he already choose. i could open a file and generate
classes out of the file and load them. The big problem is that each
class like that has a lot of configurations.
So if there any way that those classes can be "spilled" (with their
configurations) in to a file "as is" and loaded after that in to a real
files it would be great !!

Thanks,

.