Consider the following inheritance hierarchy. A class RentedVehicle that has:One private instance variable baseFee of type doubleOne constructor to initialize the instance variableOne instance method getCost () that returns the base feeAccessor methods for the instance variables A subclass FuelVehicle that :has one additional private instance variable nbKms indicating the total number of kilometers traveled.one constructor to initialize the instance variables.one instance method getMileageFees to return the fees due to mileage based on the following:If nbKms < 100 mileagefees=0.2*nbkmsIf 100<=nbKms<= 400 mileagefees=0.3*nbkmsIf nbKms>400 mileagefees=0.3 times 400 plus 0.5 times the extra kilometers above 400.- accessor methods A Car class which is a subclass of FuelVehicle that :has one additional private instance variable nbSeatshas one constructor to initialize the instance variablesoverrides getCost method by adding nbseats*baseFee to mileageFeesaccessors A Truck class which is a subclass of FuelVehicle that:has one private instance variable capacityhas one constructor to initialize the instance variablesoverrides getCost method by adding baseFee*capacity to mileageFeesaccessors A Bicycle class that extends RentedVehicle that:has one additional private instance variable nbDays indicating the number of days it is rented.has one constructor to initialize the instance variablesoverrides getCost method to return baseFee * nbDaysaccessorsImplement all five classes with their accessor and mutator methods. Application Class Write an application class that generates 6 objects randomly from either a Car, or a Truck, or a Bicycle class. Your generated objects will be stored in a RentedVehicle array.Write a static method in your test class that takes an array of RentedVehicles and prints the following for each element of the array: if the object is a car print its name and the number of seats and cost.if it is a Truck, print its name and capacity and cost.if it is a Bicycle, print its name and how many days it is rented and cost.

public class RentedVehicle{ //declare instance variable private double baseFee; //constructor for…

Answered: Write an application class that…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Consider the following inheritance hierarchy.

A class RentedVehicle that has:

One private instance variable baseFee of type double
One constructor to initialize the instance variable
One instance method getCost () that returns the base fee

Accessor methods for the instance variables

A subclass FuelVehicle that :

has one additional private instance variable nbKms indicating the total number of kilometers traveled.
one constructor to initialize the instance variables.
one instance method getMileageFees to return the fees due to mileage based on the following:

If nbKms < 100 mileagefees=0.2*nbkms

If 100<=nbKms<= 400 mileagefees=0.3*nbkms

If nbKms>400 mileagefees=0.3 times 400 plus 0.5 times the extra kilometers above 400.

- accessor methods

A Car class which is a subclass of FuelVehicle that :

has one additional private instance variable nbSeats
has one constructor to initialize the instance variables
overrides getCost method by adding nbseats*baseFee to mileageFees
accessors

A Truck class which is a subclass of FuelVehicle that:

has one private instance variable capacity
has one constructor to initialize the instance variables
overrides getCost method by adding baseFee*capacity to mileageFees
accessors

A Bicycle class that extends RentedVehicle that:

has one additional private instance variable nbDays indicating the number of days it is rented.
has one constructor to initialize the instance variables
overrides getCost method to return baseFee * nbDays
accessors

Implement all five classes with their accessor and mutator methods.

Application Class

Write an application class that generates 6 objects randomly from either a Car, or a Truck, or a Bicycle class. Your generated objects will be stored in a RentedVehicle array.

Write a static method in your test class that takes an array of RentedVehicles and prints the following for each element of the array:

if the object is a car print its name and the number of seats and cost.
if it is a Truck, print its name and capacity and cost.
if it is a Bicycle, print its name and how many days it is rented and cost.

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