Java graphics libraries for web applications?

I was asked to improve the JSP application with (and I quote) "Some Sexual Graphics" I quickly looked at SO and came up with this question which mentions several graphical solutions, however, given that this is a web application, I was wondering if there are any Are there any good chart libraries that can display the client side of charts using jQuery or some?

Otherwise, anyone who used JFreeChart to create diagrams for the Web got any pointers.

This is the first time I have done Any JSP (I did some Java and did a bit of ASP.Net), so any pointers would be appreciated.