Need help on getting started with shopping cart!!

hi guys,
i want to build a fairly simple shopping cart with servlets and jsps.. can you please point me to a starting point.. a tutorial or a general road map for it.. i am pretty okay with servlets and jsps and currently using them for a web-app..
any help would be greatly appreciated..thanks..

go to http://www.moreservlets.com, download the free pdf book "Core Servlets and Java Server Pages", there is a example program on section 9.4 talks about shopping cart.
Hope it helps.

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