$ sudo apt-get update
$ sudo apt-get install libapache-directory-api-java 

libapache-directory-api-java is installed in your system.

Make ensure the libapache-directory-api-java package were installed using the commands given below,

$ sudo dpkg-query -l | grep libapache-directory-api-java *

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

libapache-directory-api-java package basic information: