JSesh is used and supported by the IFAO .
JSesh is featured on sun's swing sightings previews 23!
Postscript printers don't print when some text is shaded. Explanation : when text is shaded, java postscript output is in fact a large bitmap of the whole page (as postscript doesn't support transparency). Emulated postscript driver can deal with this, but it seems that various printers don't like it at all. Temporary solution : don't print directly.
Use pdf output instead, and print from acrobat reader. TODO : propose a shading system which doesn't use transparency, and make it the default option for printing. Printing is currently disabled (which is not a real problem, as you can use pdf output instead).