Chapter 2, Problem 16C

Explanation of Solution

Initial considerations:

Normally, the E-book shop contains a variety list of books from which the customers places an order based on their favor.

The following architecture is not the absolute design for “e-book reader” architecture. It is the assumption and it includes variety of classes to follow the inheritance property.

Primary classes and methods:

The primary classes and the methods of E-book reader that the java software required are as follows:

• “E-bookshop”, “Customer”, “Order”, “ItemOrder”, and “Item”.
• E-bookshop contains the methods getDownloadURL() and getsizeMB().
  • getDownloadURL() is used to download the site of the book that the customer needs to purchase.
  • getsizeMB() is used to know the size of the book in bytes.
• Customer class contains the method Customer()
  • This method is to retrieve the details of customer.
• Order class contains the method Order().
  • This method places the shipping details of order.
• ItemOrder class contains the method ItemOrder()
  • This method used to get the number of order that the customer wants to place before purchasing.
• Item class contains no method but is generalized into three sub classes such as Book, MusicCD, and Software.
  • The Book class contains the method Book()  which is used to order the specific book based on author name.
  • The MusicCD class contains the method MusicCD() which is used to order the CD’s based on the artist collections.
  • The Software class contains the method Software() which is used to download the book based on the version.

Inheritance diagram for “E-book reader”:

Inheritance diagram is drawn from parent class to child class...