The unversioned jar fallback code in find_jvm in jpackage-utils <= 1.7.4 has issues (maybe triggers a sed bug or something), a trivial fix is available in upstream jpackage-utils-1.7.5-1jpp. More info: https://www.redhat.com/archives/fedora-devel-list/2008-March/msg02346.html
Fixed in jpackage-utils-1.7.5-1jpp.1.fc9.