$ sudo apt-get update
$ sudo apt-get install libmtj-java 

libmtj-java is installed in your system.

Make ensure the libmtj-java package were installed using the commands given below,

$ sudo dpkg-query -l | grep libmtj-java *

You will get with libmtj-java package name, version, architecture and description in a table

libmtj-java package basic information: