I tried the gtk look of java, but it still feels like a masquerade. For example, clipboard copy&paste does not work for me in Java with any look-n-feel, and this kills. In general, Java look-n-feel is too alien, I use both Qt and Gtk apps and I have no problems with them.
tablet-encode runs fine, but it doesn't do what I need from such an application. "Improving" it would mean a total rewrite, so I just made my own, without being constrained to learn/use Perl.