prerm is in openjdk-8-jre 8u162-b12-1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | #!/bin/sh
set -e
basedir=/usr/lib/jvm/java-8-openjdk-amd64
jre_tools='policytool'
if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then
for i in $jre_tools; do
update-alternatives --remove $i $basedir/jre/bin/$i
done
fi
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