/usr/share/java/derbyLocale_ja_JP.jar is in libderby-java 10.10.2.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/derbyLocale_ja_JP-10.10.2.0.jar
/usr/share/java/derbyLocale_ja_JP-10.10.2.0.jar