/usr/share/maven-repo/net/rubygrapefruit/native-platform/0.3/native-platform-0.3.jar is in libnative-platform-java 0.3~rc2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/net/rubygrapefruit/native-platform/0.3/../../../../../java/native-platform-0.3.jar