No "open with" for jar files

[morryis]

I cannot run .jar-files via GUI. If I right click the .jar file > Properties > “Open With” there is no "Sun Java 6 Runtime" option to choose, though I installed openjdk-6-jre. I tryed to purge and reinstalled the package with no effect. I also tried openjdk-7-jre. Currently the only possibility to execute the jar file is via terminal.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: openjdk-6-jre 6b24-1.11.1-3ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
Date: Wed Feb 29 11:42:14 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120219)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: openjdk-6
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.