/usr/share/java/jets3t-cockpit.jar is in jets3t 0.8.1+dfsg-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/jets3t-cockpit-0.8.1.jar
/usr/share/java/jets3t-cockpit-0.8.1.jar