用JAVA实现停车场管理系统-Toy模板网

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该程序使用ArrayList存储停车记录，并通过switch-case语句实现菜单选择功能。主要功能包括：

停车：输入车牌号和进入时间，自动分配停车位编号，

结算：根据停车位编号计算停车费用，计费标准为停车时长（秒）乘以每秒费用0.05元，同时记录车辆离开时间和费用；

查看记录：显示所有停车记录的编号、车牌号、进入时间、离开时间和费用；

退出程序。

当停车场已满时，无法再停车；当用户输入不存在的停车位编号或已经结算过的车辆编号时，系统会提示用户相应的信息。文章来源地址https://www.toymoban.com/news/detail-510803.html

import java.util.ArrayList;
import java.util.Scanner;

class ParkingRecord {
    int id;
    String licensePlate;
    long timeIn;
    long timeOut;
    double cost;
}

public class ParkingLot {
    private ArrayList<ParkingRecord> parkingLot;
    private int currentCapacity;
    private final int MAX_CAPACITY = 10;

    public ParkingLot() {
        parkingLot = new ArrayList<ParkingRecord>(MAX_CAPACITY);
        currentCapacity = 0;
    }

    private void showMenu() {
        System.out.println("Parking Lot Management System");
        System.out.println("=============================");
        System.out.println("1. Park a car");
        System.out.println("2. Check out a car");
        System.out.println("3. Show parking records");
        System.out.println("4. Exit");
        System.out.print("Enter your choice: ");
    }

    private void parkCar() {
        if (currentCapacity < MAX_CAPACITY) {
            Scanner scanner = new Scanner(System.in);
            System.out.print("Enter license plate: ");
            String licensePlate = scanner.nextLine();
            long timeIn = System.currentTimeMillis();
            ParkingRecord record = new ParkingRecord();
            record.id = currentCapacity + 1;
            record.licensePlate = licensePlate;
            record.timeIn = timeIn;
            parkingLot.add(record);
            currentCapacity++;
            System.out.println("Car parked successfully. Parking slot number is " + record.id);
        } else {
            System.out.println("Parking lot is full.");
        }
    }

    private void checkOutCar() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter parking slot number: ");
        int id = scanner.nextInt();
        ParkingRecord record = parkingLot.get(id - 1);
        if (record.timeOut > 0) {
            System.out.println("This car has already been checked out.");
            return;
        }
        record.timeOut = System.currentTimeMillis();
        long timeElapsed = record.timeOut - record.timeIn;
        double cost = timeElapsed / 1000.0 * 0.05;
        record.cost = cost;
        System.out.println("Checked out successfully. Parking fee is " + cost);
    }

    private void showParkingRecords() {
        System.out.println("ID\tLicense Plate\tTime In\tTime Out\tCost");
        for (ParkingRecord record : parkingLot) {
            System.out.printf("%d\t%s\t\t%d\t%d\t%.2f\n", record.id, record.licensePlate, record.timeIn, record.timeOut, record.cost);
        }
    }

    public static void main(String[] args) {
        ParkingLot parkingLot = new ParkingLot();
        Scanner scanner = new Scanner(System.in);
        int choice;
        do {
            parkingLot.showMenu();
            choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    parkingLot.parkCar();
                    break;
                case 2:
                    parkingLot.checkOutCar();
                    break;
                case 3:
                    parkingLot.showParkingRecords();
                    break;
                case 4:
                    System.out.println("Thank you for using the Parking Lot Management System.");
                    break;
                default:
                    System.out.println("Invalid choice.");
                    break;
            }
            System.out.println();
        } while (choice != 4);
    }
}

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