Question

using java:

For this exercise, you will design a set of classes that work together to simulate a parking officer checking a parked car issuing a parking ticket if there is a parking violation. Here are the classes that need to collaborate:

• The ParkedCar class: This class should simulate a parked car. The car has a make, model, color, license number. •The ParkingMeter class: This class should simulate a parking meter. The class has three parameters:

− A 5-digit ID that identifies the meter.

− A reference to the car (ParkedCar object) that is currently parked at the meter. If no car is parked, this parameter should be set to null (in this case, make sure to return “Car: none” in your toString method).

− Whether the meter has expired or not.

− The current time (you may simulate the current time).

• The ParkingTicket class: This class should simulate a parking ticket. The class should report:

− The make, model, color and license number of the illegally parked car.

− Meter ID

− The current time.

− The amount of fine, which is $25 if the meter has expired and the current time is between 9 a.m. and 5 p.m. and $10 if the meter has expired and the current time is between 5.01 p.m. and 8.59 a.m.

− The name and badge number of the police officer issuing the ticket (DO NOT store ParkingOfficer object).

• The ParkingOfficer class: This class should simulate a parking officer inspecting parked cars. The class has − the Officer’s name and badge number

− isExpired method that examines the ParkingMeter object and determines whether the meter has expired.

− A method that examines the given parking meter and returns a parking ticket (generates a ParkingTicket object) if the meter has expired. If it is not expired or no car is parked at the meter, return null value.

You may include instance variables and public interfaces in each class as you may find appropriate. Also add appropriate error checks.

Write a client program that demonstrates how these classes collaborate. In addition, you should create a UML diagram for demonstrating the relationship among the classes and submit that UML as part of your submission.

Here are some examples of your output. They need not be exactly as shown. Feel free to be creative, but you should test your program for all cases.

Parking Meter: 34521 Time: 8.00 p.m. No car parked C Parking Meter: 45673 Time: 4.54 p.m. Car Parked: Lexus ES350, Black, ABC12: Meter: Not expired Parking Meter: 98764 Time: 5.01 p.m. Car Parked: Toyota Camry, Red, EFL786 Meter: Expired Parking Ticket Issued Toyota Camry, Red, EFL786 Meter ID 98764 Time: 5.01 p.m. Fine Amount: $10 Issuing Officer: G.Bertrand, 105674

Answer 1

CODE :

import java.util.Random;

public class ParkingTicketSimulater {

public static void main(String[] args) {

ParkedCar parkedCar1 = new ParkedCar("toyota", "camry", "red", 875653, random());
ParkedCar parkedCar2 = new ParkedCar("volkswagon", "jetta", "blue", 45653, random());
ParkedCar parkedCar3 = new ParkedCar("nissan", "altima", "black", 3456343, random());

ParkingMeter parkingMeter1 = new ParkingMeter(random(), 384945);
ParkingMeter parkingMeter2 = new ParkingMeter(random(), 28464);
ParkingMeter parkingMeter3 = new ParkingMeter(random(), 4392502);

PoliceOfficer dave = new PoliceOfficer("dave", 546);

ParkingTicket parking = new ParkingTicket(parkingMeter1, parkedCar1, dave);
ParkingTicket parking1 = new ParkingTicket(parkingMeter2, parkedCar2, dave);
ParkingTicket parking2 = new ParkingTicket(parkingMeter3, parkedCar3, dave);

String parkingTicket = dave.examine(parkedCar1, parkingMeter1);
String parkingTicket1 = dave.examine(parkedCar2, parkingMeter2);
String parkingTicket2 = dave.examine(parkedCar3, parkingMeter3);

if(parkingTicket == null && parkingTicket1 == null && parkingTicket2 == null) {
System.out.println("No parking ticket generated!");
} else {
if(parkingTicket != null) {
System.out.println(parking);
} if(parkingTicket1 != null) {
System.out.println(parking1);
} if(parkingTicket2 != null) {
System.out.println(parking2);
}
}

}

public static int random() {
Random random = new Random();

return random.nextInt(500) + 1;
}
}

public class ParkedCar {
private String make;
private String model;
private String color;
private int licensePlate;
private int minutesParked;

public ParkedCar(String make, String model, String color, int licensePlate, int minutesParked) {

this.make = make;
this.model = model;
this.color = color;
this.licensePlate = licensePlate;
this.minutesParked = minutesParked;
}

public ParkedCar(ParkedCar parkedCar) {
make = parkedCar.make;
model = parkedCar.model;
color = parkedCar.color;
licensePlate = parkedCar.licensePlate;
minutesParked = parkedCar.minutesParked;
}

public void setMake(String make) {
this.make = make;

}

public void setModel(String model) {
this.model = model;
}

public void setColor(String color) {
this.color = color;
}

public void setLicensePlate(int licensePlate) {
this.licensePlate = licensePlate;
}

public void setMinutesParked(int minutesParked) {
this.minutesParked = minutesParked;
}

public String getMake() {
return this.make;
}

public String getModel() {
return this.model;
}

public String getColor() {
return this.color;
}

public int getLicensePlate() {
return this.licensePlate;
}

public int getMinutesParked() {
return minutesParked;
}

public String toString() {
String str = "\nmake: " + make + '\n' +
"model: " + model + '\n' +
"color: " + color + '\n' +
"license plae: " + licensePlate + '\n' +
"minutes parked: " + getMinutesParked() + '\n';
return str;
}
}

public class ParkingMeter {
private int parkingLotNumber;
private int minutesOnMeter;

public ParkingMeter(int minutesOnMeter, int parkingLotNumber) {
this.minutesOnMeter = minutesOnMeter;
this.parkingLotNumber = parkingLotNumber;
}

public ParkingMeter(ParkingMeter parkingMeter) {
minutesOnMeter = parkingMeter.minutesOnMeter;
parkingLotNumber = parkingMeter.parkingLotNumber;
}

private void setParkingLotNumber(int ParkingLotNumber) {
this.parkingLotNumber = parkingLotNumber;
}

public int getParkingLotNumber() {
return this.parkingLotNumber;
}

public void setMinutesOnMeter(int minutesOnMeter) {
minutesOnMeter = minutesOnMeter;
}

public int getMinutesOnMeter() {
return minutesOnMeter;
}

public String toString() {
String str = "minutes on meter: " + minutesOnMeter + "\n parking lot number: " + parkingLotNumber + '\n';
return str;
}

}

public class PoliceOfficer {
private String name;
private int badgeNumber;

public final int FEE_AMOUNT = 1;

public PoliceOfficer(String name, int badgeNumber) {
this.name = name;
this.badgeNumber = badgeNumber;
}

public PoliceOfficer(PoliceOfficer policeOfficer) {
// TODO Auto-generated constructor stub
name = policeOfficer.name;
badgeNumber= policeOfficer.badgeNumber;
}

public String examine(ParkedCar parkedCar, ParkingMeter parkingMeter) {

String fine = null;
int parkingTimeOver = parkingMeter.getMinutesOnMeter() - parkedCar.getMinutesParked();

int feeAmount = FEE_AMOUNT * parkingTimeOver;

if(parkingTimeOver > 0) {

fine = "$"+ feeAmount;

}

return fine;

}

public String toString() {
String str = "\nName: " + name + "\n" + "badge number: " + badgeNumber + '\n' ;
return str;
}
}

public class ParkingTicket {
private ParkingMeter parkingMeter;
private ParkedCar parkedCar;
private PoliceOfficer policeofficer;

public ParkingTicket(ParkingMeter parkingMeter, ParkedCar parkedCar, PoliceOfficer policeOfficer) {
this.parkingMeter = new ParkingMeter(parkingMeter);
this.parkedCar = new ParkedCar(parkedCar);
this.policeofficer = new PoliceOfficer(policeOfficer);

}

public String toString() {
String str = "------------------------------------------------------\n" +
"Parking meter: " + parkingMeter + "\nparked car: " + parkedCar + "\npolice officer:" + policeofficer;
return str;
}
//toString

}

OUTPUT :

Parking eter: miSTUTes on reter: 389 parking lot number: 28464 parked car: make: volkswagon odel: jetta Color: blue license plac: 45653 tes parked: 236 police officer: IName: dave badge number: 546 Parking meter: minutes on meter: 477 parking lot number: 4392502 parked car: make: nissan model: altima color: black license plae: 3456343 minutes parked: 434 police officer: Name: dave badge number: 546 Process finished with edt code @