DEB installer for headless service can't install if missing Java

dpkg: dependency problems prevent configuration of bluemarine-ii-headless-service:
bluemarine-ii-headless-service depends on java8-runtime; however:
Package java8-runtime is not installed.

dpkg: error processing package bluemarine-ii-headless-service (--install):
dependency problems - leaving unconfigured
Errors were encountered while processing:
bluemarine-ii-headless-service