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

libeclipselink-java is installed in your system.

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

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

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

libeclipselink-java package basic information: