/usr/share/java/libreadline-java.jar is in libreadline-java 0.8.0.1+dfsg-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/libreadline-java-0.8.0.1.jar
/usr/share/java/libreadline-java-0.8.0.1.jar