/usr/share/java/plexus-build-api-0.0.4.jar is in libplexus-build-api-java 0.0.4-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/org/sonatype/plexus/plexus-build-api/0.0.4/plexus-build-api-0.0.4.jar