From Previous Chapter my Rental and Rental Demo class public class Rental { publ

Question

From Previous Chapter my Rental and Rental Demo class

public class Rental

{

   public static final int MINUTES_PER_HOUR = 60;

   public static final double HOURLY_RATE = 40;


   private String contractNumber;

   private String contactPhoneNumber;
   private int hours;

   private int minsOver;

   private double cost;

   public Rental(String num, int minutes)
   {
   setContractNumber(num);
   setHoursAndMinutes(minutes);
   }

   public Rental()

   {
  
   this("A000", 0);

   }

   public void setContractNumber(String num)
   {

   if(num.matches("[a-zA-Z][0-9]{3}"))
   {
   num=num.substring(0,1).toUpperCase()+num.substring(1);
   contractNumber = num;
   }
   else
   {
   setContractNumber("A000");
   }
   }
   public void setHoursAndMinutes(int minutes)
   {
   hours = minutes / MINUTES_PER_HOUR;
   minsOver = minutes % MINUTES_PER_HOUR;

   if(minsOver <= HOURLY_RATE)

   cost = hours * HOURLY_RATE + minsOver;

   else
  
   cost = hours * HOURLY_RATE + HOURLY_RATE;
   }

   public String getContractNumber()
   {
      return contractNumber;
   }

   public int getHours()
   {
      return hours;
   }

   public int getMinsOver()
   {
      return minsOver;
   }
   public double getCost()
   {
      return cost;
   }

   public String getContactPhoneNumber()
   {
   if(contactPhoneNumber !=null && !contactPhoneNumber.isEmpty())
   return " (" + contactPhoneNumber.substring(0, 3) + ") " + contactPhoneNumber.substring(3, 6) + " - " + contactPhoneNumber.substring(6);
       return "";
   }

   public void setContactPhoneNumber(String contactPhoneNumber)
   {
   contactPhoneNumber= contactPhoneNumber.replaceAll("[^a-zA-Z0-9]", "");

   if(contactPhoneNumber.length()<10)
   {
   setContactPhoneNumber("0000000000");
   }

   else
   {
   this.contactPhoneNumber = contactPhoneNumber;
   }
   }
}

*****************************************************************************************

import java.util.Scanner;

public class RentalDemo
{
    public static void main(String[] args)
    {
   String contractNum;
   String contactPhoneNumber;
   int minutes;
   contractNum = getContractNumber();
   contactPhoneNumber = getContactPhoneNumber();
   minutes = getMinutes();
  
   Rental r1 = new Rental(contractNum, minutes);
   contractNum = getContractNumber();
   minutes = getMinutes();
   r1.setContactPhoneNumber(contactPhoneNumber);

   Rental r2 = new Rental(contractNum, minutes);
   contractNum = getContractNumber();
   minutes = getMinutes();
   r2.setContactPhoneNumber(contactPhoneNumber);

   Rental r3 = new Rental(contractNum, minutes);
   contractNum = getContractNumber();
   minutes = getMinutes();
   r3.setContactPhoneNumber(contactPhoneNumber);
  
   displayDetails(r1);
   displayDetails(r2);
   displayDetails(r3);
  
   System.out.println("");
   System.out.println("For Contract #" + r1.getContractNumber() + " with a time of " + r1.getHours() + " hours and " + r1.getMinsOver() + " minutes,    and Contract #" +
r2.getContractNumber() + " with a time of " + r2.getHours() + " hours and " + r2.getMinsOver() + " minutes,    the one with the longer time is Contract #" + getLongerRental(r1, r2).getContractNumber());
   System.out.println("");
   System.out.println("For Contract #" + r1.getContractNumber() + " with a time of " + r1.getHours() + " hours and " + r1.getMinsOver() + " minutes,    and Contract #" +          r3.getContractNumber() + " with a time of " + r3.getHours() + " hours and " + r3.getMinsOver() + " minutes,    the one with the longer time is Contract #" + getLongerRental(r1, r3).getContractNumber());
   System.out.println("");
   System.out.println("For Contract #" + r2.getContractNumber() + " with a time of " + r2.getHours() + " hours and " + r2.getMinsOver() + " minutes,    and Contract #" + r3.getContractNumber() + " with a time of " + r3.getHours() + " hours and " + r3.getMinsOver() + " minutes,    the one with the longer time is Contract #" + getLongerRental(r2, r3).getContractNumber());
       
   }

   public static String getContractNumber()
   {
      String num;
      Scanner input = new Scanner(System.in);
      System.out.print("Enter contract number: ");
      num = input.nextLine();
      return num;
   }

   public static String getContactPhoneNumber()
   {
      String num;
      Scanner input = new Scanner(System.in);
      System.out.print("Enter contact Phone number: ");
      num = input.nextLine();
      return num;
   }

   public static int getMinutes()
   {
   int minutes;
   final int LOW_MIN = 60;
   final int HIGH_MIN = 7200;
   Scanner input = new Scanner(System.in);
    
   System.out.print("Enter minutes: ");
   minutes = input.nextInt();
    
   while(minutes < LOW_MIN || minutes > HIGH_MIN)
      {
   System.out.println("Time must be between " + LOW_MIN + " minutes and " + HIGH_MIN + " minutes");
   System.out.print("Please reenter minutes: ");
         minutes = input.nextInt();
      }
      return minutes;
   }

   public static void displayDetails(Rental r)
   {
   System.out.println(" Contract #" + r.getContractNumber());
   System.out.println(" Contact Phone Number: "+r.getContactPhoneNumber());
   System.out.println("For a rental of " + r.getHours() + " hours and " + r.getMinsOver() + " minutes, at a rate of $"+ r.HOURLY_RATE + " the cost is $" + r.getCost());
   }

   public static Rental getLongerRental(Rental r1, Rental r2)
   {
   Rental longer = new Rental();
   int minutes1;
   int minutes2;
   final double COUPON=0.1;
      minutes1 = r1.getHours() * Rental.MINUTES_PER_HOUR + r1.getMinsOver();
      minutes2 = r2.getHours() * Rental.MINUTES_PER_HOUR + r2.getMinsOver();
      if(minutes1 >= minutes2)
   {
         longer = r1;
   }
      else
   {
         longer = r2;         
      return longer;
   }
   if (minutes1 >= minutes2)
   {
   System.out.println("Coupon good for 10 percent off next rental");
       }
   else
   {
   System.out.println("Coupon good for 10 percent off next rental");
       }

       return longer;
   }
}

In previous chapters, you developed classes that hold rental contract information for Sammy's Seashore Supplies. Now modify the Rental and RentalDemo classes as follows: 2. Modify the Rental class to include an integer field that holds an equipment type. Add a final String array that holds names of the types of equipment that Sammy's rents-jet ski, pontoon boat, rowboat, canoe, kayak, beach chair, umbrella, and other. Include get and set methods for the integer equipment type field. If the argument passed to the method that sets the equipment type is larger than the size of the array of String equipment types, then set the integer to the element number occupied by "other". Include a get method that returns a rental's String equipment type based on the numeric equipment type. .To keep the RentalDemo class simple, remove all the statements that compare rental times and that display the coupon Strings. Modify the RentalDemo class so that instead of creating three single Rental objects, it uses an array of three Rental objects. Get data for each of the objects, and then display all the details for each object. Save the files as Rental.java and RentalDemo.java.

Explanation / Answer

All parts of the question have been programmed, follow the code sequentially I have added comments where there is addition or deletion of code. If there is any confusion please comment below. If you find this answer helpful give a thumbs up. Thanks.

public class Rental

{

public static final int MINUTES_PER_HOUR = 60;

public static final double HOURLY_RATE = 40;

private String contractNumber;

private String contactPhoneNumber;

private int hours;

private int minsOver;

private double cost;

private int type; // declared type as integer

// declared equipments final String array which has list of the all rental equipments available

public static final String[] equipments = {"Jet Ski", "Pontoon Boat", "Rowboat", "Canoe", "Kayak", "Beach Chair", "Umbrella", "Other"};

public Rental(String num, int minutes)

{

setContractNumber(num);

setHoursAndMinutes(minutes);

}

public Rental()

{

this("A000", 0, 8);

}

public void setContractNumber(String num)

{

if(num.matches("[a-zA-Z][0-9]{3}"))

{

num=num.substring(0,1).toUpperCase()+num.substring(1);

contractNumber = num;

}

else

{

setContractNumber("A000");

}

}

public void setHoursAndMinutes(int minutes)

{

hours = minutes / MINUTES_PER_HOUR;

minsOver = minutes % MINUTES_PER_HOUR;

if(minsOver <= HOURLY_RATE)

cost = hours * HOURLY_RATE + minsOver;

else

cost = hours * HOURLY_RATE + HOURLY_RATE;

}

public String getContractNumber()

{

return contractNumber;

}

public int getHours()

{

return hours;

}

public int getMinsOver()

{

return minsOver;

}

public double getCost()

{

return cost;

}

// Added this function getEquipmentType() to get the type of equipment number from the object

public int getEquipmentType()

{

return type;

}

// Added this function getEquipmentName(int) access the equipment name based on the number supplied

public String getEquipmentName(int n) {

if(n < 8) // checks if the entered number is with the range of number of equipments available else returns "Other"

{

return equipments[n];

} else

{

return equipments[8];

}

}

public String getContactPhoneNumber()

{

if(contactPhoneNumber !=null && !contactPhoneNumber.isEmpty())

return " (" + contactPhoneNumber.substring(0, 3) + ") " + contactPhoneNumber.substring(3, 6) + " - " + contactPhoneNumber.substring(6);

return "";

}

public void setContactPhoneNumber(String contactPhoneNumber)

{

contactPhoneNumber= contactPhoneNumber.replaceAll("[^a-zA-Z0-9]", "");

if(contactPhoneNumber.length()<10)

{

setContactPhoneNumber("0000000000");

}

else

{

this.contactPhoneNumber = contactPhoneNumber;

}

}

// Added this function setEquipmentType(int) to set the type of equipment number of the object

public void setEquipmentType(int n)

{

if(n < 8)

{

type = n;

} else

{

type = 8

}

}

}

import java.util.Scanner;

public class RentalDemo

{

public static void main(String[] args)

{

String contractNum;

String contactPhoneNumber;

int minutes;

int type;

Rental [] r = new Rental[3]; // This creates an array of 3 null objects

for (int i = 0; i < 3; i++)

{

contractNum = getContractNumber(); // to get the contract number

contactPhoneNumber = getContactPhoneNumber(); // to get the contact phone number

minutes = getMinutes(); // to get the number of minutes to rent

type = getEquipmentType(); // to get the type of equipment rented

Rental r[i] = new Rental(contractNum, minutes); // this call will populate the objects with our values supplied in the constructor

r[i].setContactPhoneNumber(contactPhoneNumber); // sets the contact phone number

r[i].setEquipmentType(type)); // sets the equipment type

displayDetails(r[i]);

}

// Removed all the statements that print the coupons on the basis of rental timings

}

public static String getContractNumber()

{

String num;

Scanner input = new Scanner(System.in);

System.out.print("Enter contract number: ");

num = input.nextLine();

return num;

}

public static String getContactPhoneNumber()

{

String num;

Scanner input = new Scanner(System.in);

System.out.print("Enter contact Phone number: ");

num = input.nextLine();

return num;

}

// Added Function getEquipmentType() for allowing user to enter the equipment type number

public static int getEquipmentType() {

int t;

Scanner input = new Scanner(System.in);

System.out.print("Enter equipment number: ");

t = input.nextInt();

return t;

}

public static int getMinutes()

{

int minutes;

final int LOW_MIN = 60;

final int HIGH_MIN = 7200;

Scanner input = new Scanner(System.in);

System.out.print("Enter minutes: ");

minutes = input.nextInt();

while(minutes < LOW_MIN || minutes > HIGH_MIN)

{

System.out.println("Time must be between " + LOW_MIN + " minutes and " + HIGH_MIN + " minutes");

System.out.print("Please reenter minutes: ");

minutes = input.nextInt();

}

return minutes;

}

public static void displayDetails(Rental r)

{

System.out.println(" Contract #" + r.getContractNumber());

System.out.println(" Contact Phone Number: "+r.getContactPhoneNumber());

System.out.println(" The Equipment used is: "+r.getEquimpentName(r.getEquipmentType())); // this line prints the equipment to be rented

System.out.println(" For a rental of " + r.getHours() + " hours and " + r.getMinsOver() + " minutes, at a rate of $"+ r.HOURLY_RATE + " the cost is $" + r.getCost());

}

// Removed the function getLongerRental(Rental, Rental) because it contained all the unnecessary statements for coupons calculation

}

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