Using more than one JSP file including one in the others

Hi, I'm developing zimlets that needs some jsp operations.
From now I've always used only one jsp file with all the code I need, but now I want to have some classes in a separate jsp for using them elsewhere.

I've tried just to create 2 jsp files but I dunno how to include classes in my main file.

Any help would be appreciated.


Thanks in advance for the support.