Export to PDF Using Java or plain html

Export to PDF Using Java or plain html

I am displaying few tables using HTML table tag and CSS . I am using
Struts 2 and would like to include the "Export to PDF" functionality.
Right now its just one page where i have to use this. Later one there will
be one or two more page where i have to use this feature. I am Looking for
some easy to implement available plugins or jar or anything that can be
used to do that.