Anyone know what you're supposed to do after you create an achived (.jar) version of a compiled package and then 'copied' it to the ext directory (as the book suggests)? Are you supposed to just leave the original, uncompressed package where it is or can you delete it and just import from the jar file?

I can't seem to get it to do anything different, as far as importing, than if I didn't create the jar file in the first place.

EDIT:
Found this http://docs.oracle.com/javase/tutorial/ext/ Maybe the answers are here.