Is serialVersionUID really required?

[Wang, Yuesong]

Hi,
 
In theory, all Serializable classes should have a serialVersionUID, but
to provide one to every annonymous inner class used everywhere in a
Wicket app is just too much. So I decided to turn off that warning in
Eclipse, and not to use serialVersionUID any more, but what is the
implication? For example, will I run into any problem during
deployment/undeployment? What about clustering?
 
Thanks,
 
Yuesong