When you install a VMware vCloud Director instance, it comes with an embedded JRE (Java Runtime Environment). For example, vCloud Director includes JRE 1.8.0_121 :

1$VCLOUD_HOME/jre/bin/java -version
2java version "1.8.0_121"
3Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
4Java HotSpot(TM) 64-Bit Server …