/usr/share/maven-repo/org/netbeans/api/org-openide-util-ui/8.1/org-openide-util-ui-8.1.jar is in libnb-org-openide-util-java 8.1+dfsg1-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/netbeans/api/org-openide-util-ui/8.1/../../../../../../java/org-openide-util-ui-8.1.jar