/usr/share/maven-repo/com/jamonapi/jamon/2.7/jamon-2.7.jar is in libjamon-java 2.7-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/com/jamonapi/jamon/2.7/../../../../../java/jamon-2.7.jar