openjdk-11-jre-zero 11.0.18+10-0ubuntu5 (ppc64el binary) in ubuntu mantic

 The package provides an alternative runtime using the Zero VM. Built on
 architectures in addition to the Hotspot VM as a debugging aid for those
 architectures which don't have a Hotspot VM.
 .
 The VM is started with the option `-zero'. See the README.Debian for details.