Crystal Reports. Ugh. In order to use Crystal Reports and Java, you will need to implement the Crystal Reports Report Server. This is particularly annoying of you want client-side reports, but it should work for JSPs. However, this server servs the report up as its own page. I've not explored this, but if you wanted it on your own page, you might look into using HTML frames. Or maybe portal technology. Just a warning: Crystal is extremely annoying to work with (which, if you've used it extensively, I'm sure that you know). There are other 100% Java reporting tools out there. Search Google for JasperReports and JFreeReport -- those are two open source alternitives that I know of.
Piscis Babelis est parvus, flavus, et hiridicus, et est probabiliter insolitissima raritas in toto mundo.
for report generation VML(Vector Markup Language) can be used. It can be be included in jsp pages with great ease as they almost look like java or jsp tags. through google you can find out about this and there is a trial version also for VML. VML is very light weight and will not take much of loading time. The loading time is almost like a jso loading time. hope u find it useful.