## Please enter an object design

Requirements specification:
//----------------------------------------------------- // This sample model is inspired of the 'UML Distilled' // book by Martin Fowler. //----------------------------------------------------- package Example { class Product { string reference; double weight; double width; double height; double depth; } class Book extends Product { string title; string[] authors; int pages; } class Customer { string name; string address; } class OrderLine { Product product; int quantity; double amount; double price; string currency; bool satisfied; } class Order { date received; bool prePaid; string ID; double price; string currency; Customer customer; aggregate OrderLine[] orderLines; } class Corporate extends Customer { string contactName; double creditRating; double creditLimit; } class Personal extends Customer { string creditCard; } }