A publication has a title and a publisher (both of type String). A book is a publication with an author and an ISBN number (both of type String). A library book is a book with a catalogue number and a copy number (both of type int). Using inheritance write a class hierarchy for publication, book and library book. The base class should be called Publication. Each class should have a parameterised constructor that calls the constructor in the super class. *Note: getter, setter and toString methods are not required for any of these three classes.*

language java