/usr/lib/libwiredtiger_java.so is in libwiredtiger-dev 2.6.1+ds-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libwiredtiger_java.so.0.0.0
/usr/lib/libwiredtiger_java.so.0.0.0