rhino:
  This is a run-time dependency for OpenJDK/OpenJRE.
  You must install this package to use either OpenJDK or OpenJRE.

openjdk:
  The Java Development Kit. If you want to develop in Java, this package
  will suit your needs.

openjre:
  The Java Runtime Environment.  Unless you're developing Java code, this package
  will suffice to run Java binaries.

icedtea-web:
  This is a web browser plugin to enable the execution of Java Applets.