java-common

update-java-alternatives skips javaws. Is it supposed to?

0 root@muizenberg:/srv/local/guest#lsb_release -d
Description: Ubuntu 12.04.1 LTS
0 root@muizenberg:/srv/local/guest#update-java-alternatives --list
java-1.6.0-openjdk-amd64 1061 /usr/lib/jvm/java-1.6.0-openjdk-amd64
java-1.7.0-openjdk-amd64 1051 /usr/lib/jvm/java-1.7.0-openjdk-amd64
1 root@muizenberg:/srv/local/guest#ls -l /etc/alternatives/javaws
lrwxrwxrwx 1 root root 48 Sep 26 15:50 /etc/alternatives/javaws -> /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/javaws
0 root@muizenberg:/srv/local/guest#update-java-alternatives -s java-1.6.0-openjdk-amd64
update-java-alternatives: plugin alternative does not exist: /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so
0 root@muizenberg:/srv/local/guest#ls -l /etc/alternatives/javaws
lrwxrwxrwx 1 root root 48 Sep 26 15:50 /etc/alternatives/javaws -> /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/javaws
0 root@muizenberg:/srv/local/guest#update-alternatives --set javaws /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/javaws
update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/javaws to provide /usr/bin/javaws (javaws) in manual mode.
0 root@muizenberg:/srv/local/guest#update-java-alternatives -s java-1.7.0-openjdk-amd64
0 root@muizenberg:/srv/local/guest#ls -l /etc/alternatives/javaws
lrwxrwxrwx 1 root root 48 Sep 26 16:02 /etc/alternatives/javaws -> /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/javaws
0 root@muizenberg:/srv/local/guest#