POSTIN

/bin/sh

alternatives \
  --install /usr/share/javadoc/java javadocdir /usr/share/javadoc/java-1.8.0-openjdk/api \
  000000

exit 0

POSTUN

/bin/sh

C=`alternatives --display  javadocdir | grep 1.8.0 | grep priority   | wc -l`
if [ $C -gt 1  -o  $1 -eq 0 ] ; then
  alternatives --remove javadocdir /usr/share/javadoc/java-1.8.0-openjdk/api
fi
exit 0