I've come across one for a cell phone, T616 I believe. Don't know if you could port the java code that runs on a cell phone's JRE to the palms JRE. You might want to check out java apps for the blackberry handheld devices. the 6210's and 7210 i know run java, and i belive have java based web browsers. I know these aren't exactly what you want, but you might be able to stumble across what you are looking for.