TR: Converting html to pdf with java

Hello,
I don't know if this is the good place for such a question. But has anyone had the chance to expirement a java library that would convert accessible (x)html page to an accessible pdf document?
For instance, I've found this article : http://www.javaworld.com/javaworld/jw-04-2006/jw-0410-html.html
Unfortunately the input file taken as example is too poor in tags to have a good feeling of the accessibility of the output.
Thanks in advance for your valuable advice.
Regards
Tanguy