POSTIN

/bin/sh

/usr/sbin/update-alternatives --install /usr/share/java/jsp.jar jsp \
    /usr/share/java/tomcat-jsp-2.3-api.jar 20200

POSTUN

/bin/sh

if [ "$1" = "0" ]; then
    /usr/sbin/update-alternatives --remove jsp \
        /usr/share/java/tomcat-jsp-2.3-api.jar
fi