$ sudo apt-get update
$ sudo apt-get install libfreehep-swing-java 

libfreehep-swing-java is installed in your system.

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

$ sudo dpkg-query -l | grep libfreehep-swing-java *

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

libfreehep-swing-java package basic information: