How to print in duplex mode using java/java script?

Hi all,
I have an application in which i am using jasper reports to generate a PDF document , is there any way by which i can specify in my code that , when that document is printed , it should be printed in duplex mode i.e it should print on both sides of the paper.

pls help , its a bit urgent.

Ease Up. Every question on JavaRanch is "urgent", at least to the person posting it.
Also, please do not post the same question more than once. It causes confusion and duplication of effort as the community tries to help everyone.

Hey Joe,
It is really urgent , thats why i wrote that, i hv been searching for its solution from 2 days before posting it here.and don't have much time left to finish this task.but if you mind writing such words , from next time i won't use those here in this forum.

regards
Jo

EaseUp is advice, not an order. People in forums tend not to answer if they feel hectored or hassled in anyway.

Since this is a duplicate post, and its better placed in the other forum, I'll close this one.
[ March 14, 2007: Message edited by: Paul Sturrock ]