/usr/share/maven-repo/org/apache/ant/ant-swing/debian/ant-swing-debian.jar is in ant-optional 1.9.9-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/apache/ant/ant-swing/debian/../../../../../../java/ant-swing-1.9.9.jar