チャットgptが作ったjavaのプログラムをわかりやすく説明してほしい
してほしいこと
chatGPTが生成したjavaの駐車場シミュレーターが難しくてよくわかりません。わかりやすく説明してくださる方がいればお願いします。
chatgptはサイズや形状、車両の種類、利用者の行動パターン、料金体系、ナンバープレートなどを組み込んだプログラムだと言っています。
コード
駐車場シミュレーター
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
enum VehicleType {
SEDAN,
SUV,
MOTORBIKE
}
class User {
private String name;
public User(String name) {
this.name = name;
}
public String getName() {
return name;
}
}
class ParkingTicket {
private String licensePlate;
private long startTime;
private long endTime;
private double cost;
public ParkingTicket(String licensePlate, long startTime) {
this.licensePlate = licensePlate;
this.startTime = startTime;
}
public void setEndTime(long endTime) {
this.endTime = endTime;
calculateCost();
}
private void calculateCost() {
// Implement your logic for calculating parking cost based on duration, vehicle type, etc.
// For simplicity, let's assume a flat rate for now.
cost = 5.0;
}
public double getCost() {
return cost;
}
public String getLicensePlate() {
return licensePlate;
}
}
class ParkingSpot {
private int spotNumber;
private boolean occupied;
private VehicleType allowedVehicleType;
public ParkingSpot(int spotNumber, VehicleType allowedVehicleType) {
this.spotNumber = spotNumber;
this.allowedVehicleType = allowedVehicleType;
}
public int getSpotNumber() {
return spotNumber;
}
public boolean isOccupied() {
return occupied;
}
public VehicleType getAllowedVehicleType() {
return allowedVehicleType;
}
public void parkVehicle() {
occupied = true;
}
public void vacateSpot() {
occupied = false;
}
}
class ParkingLot {
private ArrayList<ParkingSpot> parkingSpots;
private Map<String, ParkingTicket> activeTickets;
public ParkingLot(int capacity) {
parkingSpots = new ArrayList<>();
activeTickets = new HashMap<>();
// Assume a simple parking lot layout for demonstration purposes.
for (int i = 1; i <= capacity; i++) {
if (i % 5 == 0) {
parkingSpots.add(new ParkingSpot(i, VehicleType.SUV));
} else if (i % 3 == 0) {
parkingSpots.add(new ParkingSpot(i, VehicleType.MOTORBIKE));
} else {
parkingSpots.add(new ParkingSpot(i, VehicleType.SEDAN));
}
}
}
public boolean parkVehicle(User user, VehicleType vehicleType, String licensePlate) {
// Implement logic to find a suitable spot based on vehicle type and availability
// For simplicity, let's assume any available spot can be used for now.
ParkingSpot availableSpot = findAvailableSpot(vehicleType);
if (availableSpot != null) {
availableSpot.parkVehicle();
ParkingTicket ticket = new ParkingTicket(licensePlate, System.currentTimeMillis());
activeTickets.put(licensePlate, ticket);
System.out.println(user.getName() + "さん、車を駐車しました。");
return true;
} else {
System.out.println("申し訳ありませんが、駐車場が満車です。");
return false;
}
}
private ParkingSpot findAvailableSpot(VehicleType vehicleType) {
for (ParkingSpot spot : parkingSpots) {
if (!spot.isOccupied() && (spot.getAllowedVehicleType() == vehicleType || spot.getAllowedVehicleType() == VehicleType.SEDAN)) {
return spot;
}
}
return null;
}
public void removeVehicle(User user, String licensePlate) {
if (activeTickets.containsKey(licensePlate)) {
ParkingTicket ticket = activeTickets.get(licensePlate);
ticket.setEndTime(System.currentTimeMillis());
double cost = ticket.getCost();
System.out.println(user.getName() + "さん、車を出庫しました。駐車料金は¥" + cost + "です。");
activeTickets.remove(licensePlate);
vacateSpot(licensePlate);
} else {
System.out.println("指定された車両は駐車場に存在しません。");
}
}
private void vacateSpot(String licensePlate) {
for (ParkingSpot spot : parkingSpots) {
if (spot.isOccupied() && spot.getSpotNumber() == Integer.parseInt(licensePlate.substring(licensePlate.length() - 1))) {
spot.vacateSpot();
return;
}
}
}
public void displayParkingLotStatus() {
System.out.println("駐車場の状態:");
for (ParkingSpot spot : parkingSpots) {
System.out.print("スポット " + spot.getSpotNumber() + ": ");
if (spot.isOccupied()) {
System.out.println("車両あり (" + spot.getAllowedVehicleType() + ")");
} else {
System.out.println("空き (" + spot.getAllowedVehicleType() + ")");
}
}
}
}
public class AdvancedParkingSimulator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("駐車場の容量を入力してください: ");
int capacity = scanner.nextInt();
ParkingLot parkingLot = new ParkingLot(capacity);
while (true) {
System.out.println("\n1. 車を駐車する");
System.out.println("2. 車を出庫する");
System.out.println("3. 駐車場の状態を表示する");
System.out.println("4. 終了");
System.out.print("選択: ");
int choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.print("名前を入力してください: ");
String userName = scanner.next();
System.out.print("車のタイプを選択してください (1. Sedan, 2. SUV, 3. Motorbike): ");
int vehicleTypeChoice = scanner.nextInt();
VehicleType vehicleType = getVehicleType(vehicleTypeChoice);
System.out.print("車のナンバープレートを入力してください: ");
String licensePlate = scanner.next();
User user = new User(userName);
parkingLot.parkVehicle(user, vehicleType, licensePlate);
break;
case 2:
System.out.print("名前を入力してください: ");
userName = scanner.next();
System.out.print("車のナンバープレートを入力してください: ");
licensePlate = scanner.next();
user = new User(userName);
parkingLot.removeVehicle(user, licensePlate);
break;
case 3:
parkingLot.displayParkingLotStatus();
break;
case 4:
System.out.println("プログラムを終了します。");
System.exit(0);
default:
System.out.println("無効な選択です。再度選択してください。");
}
}
}
private static VehicleType getVehicleType(int choice) {
switch (choice) {
case 1:
return VehicleType.SEDAN;
case 2:
return VehicleType.SUV;
case 3:
return VehicleType.MOTORBIKE;
default:
throw new IllegalArgumentException("無効な車のタイプです。");
}
}
}
javaを勉強するためです。
よろしくお願いします。
0