/usr/share/java/OtpErlang-1.8.1.jar is in erlang-jinterface 1:20.2.2+dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../../lib/erlang/lib/jinterface-1.8.1/priv/OtpErlang.jar