use ant to zip it down into a jar and then just give
it to them.

I hope this answers your question, but if it does not
let me know.

Thanks for answering my question, but I still have a
doubt, if I give them the jar do they still need to
have the java  JDK on they computer?

Since I dont know your system I am unable to answer
that in a definative fashion; yes the will need
something to work with the java, if you do it though a
browser it should be just fine.

If not you may have to download the jdk if it is not
already there.

They will need a JRE to run it. If you have the Java JRE then you can
run stuff, you need JDK to compile stuff.

to run jar files you need the jre (not jdk). in windows xp it is built in (prog
files\java). in 98 you must have to install jre if it is not there. (same path)