$ sudo apt-get update
$ sudo apt-get install libjboss-reflect-java 

libjboss-reflect-java is installed in your system.

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

$ sudo dpkg-query -l | grep libjboss-reflect-java *

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

libjboss-reflect-java package basic information: