/usr/share/java/libgcj-4.8.5.jar is in gcj-4.8-jre-lib 4.8.5-4ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/libgcj-4.8.jar
/usr/share/java/libgcj-4.8.jar