/usr/share/java/naga-debug-3_0.jar is in libnaga-java 3.0+svn80-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/naga-debug-3_0-3.0+svn80.jar
/usr/share/java/naga-debug-3_0-3.0+svn80.jar