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

libxmpcore-java is installed in your system.

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

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

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

libxmpcore-java package basic information: