PREUN

/bin/sh

if [ "$1" = "0" ]; then
    /usr/sbin/update-alternatives --remove javamail /usr/share/java/classpathx-mail-1.3.1-monolithic.jar
fi

POSTIN

/bin/sh

/usr/sbin/update-alternatives --install /usr/share/java/javamail.jar javamail /usr/share/java/classpathx-mail-1.3.1-monolithic.jar 010301

Triggers

classpathx-mail-monolithic <= 0:1.1.1-1jpp

/bin/sh

# Remove file from old monolithic subpackage
rm -f /usr/share/java/javamail.jar
# Recreate the link as update-alternatives could not do it
ln -s /etc/alternatives/javamail /usr/share/java/javamail.jar