Chapter 8, Problem 1RE

Program Plan Intro

Java class:

• In java, the classes are the abstraction of real world entity. The classes are abstract because it doesn’t give a shape/form.
• The class is a structural definition or a blueprint of design upon the objects are constructed.
• The objects are representations of the designs.
• The java classes contain attributes and methods. These are known as the class members. Theses class members are accessible only for the objects of that class.
• For example, if there is a class “Rectangle”, then the attributes of the class can be “height”, “width” and the methods can be “findHeight()” and “findWidth()”. An object of the class “Rectangle” can be created to access the attributes and methods of it.

Explanation of Solution

Finding classes:

The possible classes are,

Driver:

• The car share system is mainly used by the drivers, to pick up other riders and enabling them to make money during their commute.
• The app let the drivers to enter their route and time.
• In this class, the drivers can give their also the details of the trip so the passengers can reach them.

Passenger:

• The car share system should include a class for storing the details of every passenger in a trip.
• By this, the system can send the details of next trip and the passengers get notifications of next trip through the system. For that, the class Passenger is used.

Map:

• One of the important detail to be included in the system is, map of the route to a destination.
• The car share system app lets drivers and riders enter their route and time. The class Map is used to store all the details of route.

Billing:

• The car share system let the drivers pick up other riders, enabling them to make money.
• Here, the riders wait at pickup points, are dropped off at their destinations, and pay for the distance travelled.
• It notifies drivers and riders and handles billing. For handling the bills, the class Billing can be used.