File: /var/lib/dpkg/info/openjdk-21-jdk-headless:amd64.preinst
#!/bin/sh
set -e
multiarch=x86_64-linux-gnu
old_basedir=/usr/lib/jvm/java-7-openjdk
jdk_hl_tools='apt extcheck idlj jar jarsigner javac javadoc javah javap jdb jhat jinfo jmap jps jrunscript jsadebugd jstack jstat jstatd native2ascii rmic schemagen serialver wsgen wsimport xjc'
case "$1" in
    upgrade)
	if [ -n "$multiarch" ] && [ -n "$2" ]; then
	    for i in $jdk_hl_tools; do
		if [ -n "$(update-alternatives --list $i 2>/dev/null | grep ^$old_basedir/)" ]; then
		    update-alternatives --remove $i $old_basedir/bin/$i || true
		fi
	    done
	fi
	;;
esac
exit 0