executing Jar archives in Konqueror 3.1.3

[Jens Lehmann <jens.lehmann@goldmail.de>]

Hello,

Java Jar archives are executed using java -jar file.jar. I want to start 
Jar archives directly from within Konqueror. In KDE 2.2.2 this was easy 
to do: I associated Jar archives with the command java -jar. In KDE 
3.1.3 from sid this is still possible, but no longer works. There's no 
error message, the Jar file is simply not executed. How do I have to do 
it now?

Jens