In previous chapters, you developed classes that hold rental contract information for Sammy's Seashore Supplies. Now...
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:
- 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—personal watercraft, 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.
public class Rental {
public final static int MINUTES_IN_HOUR = 60;
public final static double HOUR_RATE = 40.00;
private double price;
private String contractNumber;
private int hours;
private int extraMinutes;
private String contactPhoneNumber;
// default constructor
Rental() {
this("A000", 0);
}
// parameterized constructor
Rental(String num, int minutes) {
setContractNumber(num);
setHoursAndMinutes(minutes);
}
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_IN_HOUR;
extraMinutes = minutes % MINUTES_IN_HOUR;
if (extraMinutes <= HOUR_RATE)
price = hours * HOUR_RATE + extraMinutes;
else
price = hours * HOUR_RATE + HOUR_RATE;
}
// get methods
public String getContractNumber() {
return contractNumber;
}
public double getPrice() {
return price;
}
public int getHours() {
return hours;
}
public int getExtraMinutes() {
return extraMinutes;
}
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;
}
}
public class RentalDemo {
public static void main(String[] args) {
String contractNum;
String contactPhoneNumber;
int minutes;
contractNum = getContractNumber();
contactPhoneNumber = getContractPhoneNumber();
minutes = getMinutes();
Rental r1 = new Rental(contractNum, minutes);
r1.setContactPhoneNumber(contactPhoneNumber);
contractNum = getContractNumber();
minutes = getMinutes();
Rental r2 = new Rental(contractNum, minutes);
contractNum = getContractNumber();
minutes = getMinutes();
Rental r3 = new Rental(contractNum, minutes);
displayDetails(r1);
displayDetails(r2);
displayDetails(r3);
System.out.println("Of Contract #" + r1.getContractNumber() + " with a time of " + r1.getHours() + " hours and "
+ r1.getExtraMinutes() + " minutes,\n and Contract #" + r2.getContractNumber() + " with a time of "
+ r2.getHours() + " hours and " + r2.getExtraMinutes()
+ " minutes,\n the one with the longer time is Contract #"
+ getLongerRental(r1, r2).getContractNumber());
System.out.println("Of Contract #" + r1.getContractNumber() + " with a time of " + r1.getHours() + " hours and "
+ r1.getExtraMinutes() + " minutes,\n and Contract #" + r3.getContractNumber() + " with a time of "
+ r3.getHours() + " hours and " + r3.getExtraMinutes()
+ " minutes,\n the one with the longer time is Contract #"
+ getLongerRental(r1, r3).getContractNumber());
System.out.println("Of Contract #" + r2.getContractNumber() + " with a time of " + r2.getHours() + " hours and "
+ r2.getExtraMinutes() + " minutes,\n and Contract #" + r3.getContractNumber() + " with a time of "
+ r3.getHours() + " hours and " + r3.getExtraMinutes()
+ " minutes,\n 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 getContractPhoneNumber() {
String num;
Scanner input = new Scanner(System.in);
System.out.print("Enter contract Phone number >> ");
num = input.nextLine();
return num;
}
public static int getMinutes() {
int minutes;
Scanner input = new Scanner(System.in);
System.out.print("Enter minutes >> ");
minutes = input.nextInt();
do {
if (minutes <= 60 || minutes >= 7200)
System.out.println("Please enter a valid input for minuted (between 60 and 7200)");
System.out.print("Enter minutes >> ");
minutes = input.nextInt();
} while (minutes <= 59 || minutes >= 7201);
return minutes;
}
public static void displayDetails(Rental r) {
System.out.println("\nContract #" + r.getContractNumber());
System.out.println("\nContact Phone Number#" + r.getContactPhoneNumber());
System.out.print("For a rental of " + r.getHours() + " hours and " + r.getExtraMinutes());
System.out.printf(" minutes, at a rate of $%.2f\n", r.getPrice());
}
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_IN_HOUR + r1.getExtraMinutes();
minutes2 = r2.getHours() * Rental.MINUTES_IN_HOUR + r2.getExtraMinutes();
if (minutes1 >= minutes2) {
longer = r1;
} else {
longer = r2;
return longer;
}
if (minutes1 >= minutes2) {
System.out.println("You've earned a reward coupon! Valid for 10% off your next rental. Coupon Value: "
+ (minutes1 * COUPON));
} else {
System.out.println("You've earned a reward coupon! Valid for 10% off your next rental. Coupon Value: "
+ (minutes2 * COUPON));
}
return longer;
}
}
Homework Answers
Code
Rental.java
public class Rental
{
public final static int MINUTES_IN_HOUR = 60;
public final static double HOUR_RATE = 40.00;
public final static String typeNames[]={"personal
watercraft","pontoon boat", "rowboat", "canoe", "kayak", "beach
chair", "umbrella", "other"};
private double price;
private String contractNumber;
private int hours;
private int extraMinutes;
private String contactPhoneNumber;
private int type;
// default constructor
Rental()
{
this("A000", 0);
}
// parameterized constructor
Rental(String num, int minutes)
{
setContractNumber(num);
setHoursAndMinutes(minutes);
}
public int getType() {
return type;
}
public void setType(int type) {
if(type>typeNames.length)
this.type=typeNames.length;
else
this.type = type;
}
public String getTypeString()
{
return typeNames[type-1];
}
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_IN_HOUR;
extraMinutes = minutes % MINUTES_IN_HOUR;
if (extraMinutes <= HOUR_RATE)
price = hours * HOUR_RATE + extraMinutes;
else
price = hours * HOUR_RATE + HOUR_RATE;
}
// get methods
public String getContractNumber() {
return contractNumber;
}
public double getPrice() {
return price;
}
public int getHours() {
return hours;
}
public int getExtraMinutes() {
return extraMinutes;
}
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;
}
}
}
RentalDemo.java
import java.util.Scanner;
public class RentalDemo
{
public static void main(String[] args)
{
String contractNum;
String contactPhoneNumber;
int minutes,type;
Rental r[]=new Rental[3];
for(int i=0;i<r.length;i++)
{
System.out.println("\nEnter Informatio for item number
#"+(i+1));
contractNum = getContractNumber();
contactPhoneNumber = getContractPhoneNumber();
minutes = getMinutes();
type=getType();
r[i]= new Rental(contractNum, minutes);
r[i].setContactPhoneNumber(contactPhoneNumber);
r[i].setType(type);
}
for(int i=0;i<r.length;i++)
{
System.out.println("\nRent item number #"+(i+1));
displayDetails(r[i]);
}
}
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 getContractPhoneNumber() {
String num;
Scanner input = new Scanner(System.in);
System.out.print("Enter contract Phone number >> ");
num = input.nextLine();
return num;
}
public static int getMinutes() {
int minutes;
Scanner input = new Scanner(System.in);
do {
System.out.print("Enter minutes >> ");
minutes = input.nextInt();
if (minutes <= 60 || minutes >= 7200)
System.out.println("Please enter a valid input for minuted (between
60 and 7200)");
} while (minutes <= 59 || minutes >= 7201);
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("Rent item: "+r.getTypeString());
System.out.print("For a rental of " + r.getHours() + " hours and "
+ r.getExtraMinutes());
System.out.printf(" minutes, at a rate of $%.2f\n",
r.getPrice());
}
private static int getType()
{
int type;
Scanner input = new Scanner(System.in);
System.out.print("Enter rent item type (1 to 8) >> ");
type=input.nextInt();
return type;
}
}
outputs
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