The find-jar command tests the resolution of a given element. If successful it will return a JAR file or a directory.
This command is solely intended for testing resolution and should not be used in scripts. Even for single-element classpath building build-classpath is preferred since single-element searches can produce multiple file results when resolving into a directory.
find-jar xpp3 will print /usr/share/java/xpp3.jar on standard output.
Bugs should be reported through Java Packages Tools issue tracker at Github: m[blue]https://github.com/fedora-java/javapackages/issuesm.