/usr/share/maven-repo/net/rubygrapefruit/native-platform/0.10/native-platform-0.10.jar is in libnative-platform-java 0.10+dfsg-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/net/rubygrapefruit/native-platform/0.10/../../../../../java/native-platform-0.10.jar