/usr/share/maven-repo/org/freehep/freehep-swing/debian/freehep-swing-debian.jar is in libfreehep-swing-java 2.0.3-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/freehep/freehep-swing/debian/../2.0.3/freehep-swing-2.0.3.jar