--in java don\'t copy-- Design a set of classes that, work together to simulate

Question

--in java don't copy--

Design a set of classes that, work together to simulate a police officer issuing a parking ticket. You should design the following, classes:

1. the ParkedCar class: this class should simulate a parked car. The class's responsibility are as follows:

   -To know the car's make, model, color, license number, and the number of minutes that the car has been parked

2. The ParkingMeter class: This class should a parking meter.. The class's only responsibility is as follows:

   -To know the number of minutes of parking time that has been purchased

3. The ParkingTicket class: this class should simulate a parking ticket. The class's responsibilities are as follows:

   - To report the make,, model, color, and license number of the illegally parked car

   - To report the amount of fine, which is $25 for the first hour or part of an hour that the car is illegally parked, plus $10 for every additional hour or part of an hour that the car is illegally parked

   -To report the name and badge number of the police office issuing the ticket

4. The PoliceOfficer class: This class should simulate a police officer inspecting parked cars. The class's responsibility are as follows:

   -To know the police officer's name and badge number

   -To examine a ParkedCar object and a ParkingMeter object, and determine whether a car's time has expired

   -To issue a parking ticket(generate a ParkingTicket object) if the car's time has expired

Also, Write a program that demonstrate these classes collaborate.

Explanation / Answer

public class ParkingMeter {
   int parkingTimePurchased;

   /**
   * @param parkingTimePurchased
   */
   ParkingMeter(int parkingTimePurchased) {
       setParkingTimePurchased(parkingTimePurchased);
   }

   /**
   * @return the parkingTimePurchased
   */
   public int getParkingTimePurchased() {
       return parkingTimePurchased;
   }

   /**
   * @param parkingTimePurchased
   * the parkingTimePurchased to set
   */
   public void setParkingTimePurchased(int parkingTimePurchased) {
       this.parkingTimePurchased = parkingTimePurchased;
   }

}

public class ParkingTicket {
   ParkedCar parkedCar;
   ParkingMeter parkingMeter;
   PoliceOfficer policeOfficer;

   /**
   * @param policeOfficer
   * @param parkedCar
   * @param parkingMeter
   */
   ParkingTicket(PoliceOfficer policeOfficer, ParkedCar parkedCar,
           ParkingMeter parkingMeter) {
       this.policeOfficer = policeOfficer;
       this.parkedCar = parkedCar;
       this.parkingMeter = parkingMeter;
   }

   public String getColor() {
       return parkedCar.getColor();
   }

   public Double getFine() {
       int illegalMinutes = parkedCar.getMinutesParked()
               - parkingMeter.getParkingTimePurchased();
       double fine = 0;

       if (illegalMinutes >= 60) {
           fine += 25.00;
           illegalMinutes -= 60;
       }

       while (illegalMinutes > 0) {
           if (illegalMinutes >= 60) {
               fine += 10.00;
               illegalMinutes -= 60;
           }

           else {
               fine += 10.00;
               illegalMinutes -= illegalMinutes;
           }
       }

       return fine;
   }

   public String getLicense() {
       return parkedCar.getLicenseNumber();
   }

   public String getMake() {
       return parkedCar.getMake();
   }

   public String getModel() {
       return parkedCar.getModel();
   }

   public String getOfficerBadgeNumber() {
       return policeOfficer.getBadgeNumber();
   }

   public String getOfficerName() {
       return policeOfficer.getName();
   }
}

public class PoliceOfficer {
   private String name, badgeNumber;

   /**
   * @param name
   * @param badgeNumber
   */
   PoliceOfficer(String name, String badgeNumber) {
       this.name = name;
       this.badgeNumber = badgeNumber;
   }

   /**
   * @param parkedCar
   * @param parkingMeter
   */
   public void examineParkedCar(ParkedCar parkedCar, ParkingMeter parkingMeter) {
       if (parkingMeter.getParkingTimePurchased() < parkedCar
               .getMinutesParked()) {
           ParkingTicket parkingTicket = new ParkingTicket(this, parkedCar,
                   parkingMeter);

           System.out.println(parkedCar.getModel()
                   + " is illegally parked. Ticket issued.");

           System.out.println(" Parking ticket:");
           System.out.println("Issuing officer's name: "
                   + parkingTicket.getOfficerName());
           System.out.println("Issuing officer's badge number: "
                   + parkingTicket.getOfficerBadgeNumber());
           System.out.println("Fine: $" + parkingTicket.getFine());
       }

       else {
           System.out.println(parkedCar.getModel() + " is legally parked.");
       }
   }

   /**
   * @return the name
   */
   public String getName() {
       return name;
   }

   /**
   * @return the badgeNumber
   */
   public String getBadgeNumber() {
       return badgeNumber;
   }

}

public class ParkingTicketSimulator {

   /**
   * @param arsg
   */
   public static void main(String[] arsg) {
       PoliceOfficer andy = new PoliceOfficer("Srinivas", "BD222");
       ParkedCar accord = new ParkedCar("Maruthi", "Swift", "White",
               "LICE332", 211);
       ParkingMeter meter = new ParkingMeter(40);

       andy.examineParkedCar(accord, meter);
   }
}

OUTPUT:

Swift is illegally parked. Ticket issued.

Parking ticket:
Issuing officer's name: Srinivas
Issuing officer's badge number: BD222
Fine: $45.0

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