/usr/share/java/libgcj-4.9.3.jar is in gcj-4.9-jre-lib 4.9.3-13ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/libgcj-4.9.jar
/usr/share/java/libgcj-4.9.jar