.Java停车场信息管理 设计一个停车场信息管理系统，能够实现对停车位的信息管理（车位号、车主姓名、性别、年龄、车牌 号）。最后，停车信息输出到out.txt中。

这里是一个简单的Java停车场信息管理系统的设计：

import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class ParkingLotManagementSystem {

    public static void main(String[] args) {

        ArrayList<ParkingSpace> parkingSpaces = new ArrayList<>();  // 创建停车位列表

        // 添加停车位信息（示例数据）
        parkingSpaces.add(new ParkingSpace(1, "张三", "男", 30, "粤A12345"));
        parkingSpaces.add(new ParkingSpace(2, "李四", "女", 25, "粤B67890"));
        parkingSpaces.add(new ParkingSpace(3, "王五", "男", 40, "粤C24680"));

        Scanner scanner = new Scanner(System.in);

        // 循环显示菜单
        while (true) {
            System.out.println("停车场信息管理系统");
            System.out.println("1. 添加停车位信息");
            System.out.println("2. 删除停车位信息");
            System.out.println("3. 修改停车位信息");
            System.out.println("4. 显示所有停车位信息");
            System.out.println("5. 退出");

            int choice = scanner.nextInt();  // 读取用户选择

            switch (choice) {
                case 1:
                    addParkingSpace(parkingSpaces, scanner);
                    break;
                case 2:
                    deleteParkingSpace(parkingSpaces, scanner);
                    break;
                case 3:
                    updateParkingSpace(parkingSpaces, scanner);
                    break;
                case 4:
                    showAllParkingSpaces(parkingSpaces);
                    break;
                case 5:
                    saveParkingSpacesToFile(parkingSpaces);
                    System.exit(0);  // 退出程序
                default:
                    System.out.println("无效的选择，请重新输入。");
            }
        }
    }

    // 添加停车位信息
    private static void addParkingSpace(ArrayList<ParkingSpace> parkingSpaces, Scanner scanner) {
        System.out.println("请输入车位号：");
        int id = scanner.nextInt();
        System.out.println("请输入车主姓名：");
        String name = scanner.next();
        System.out.println("请输入性别：");
        String gender = scanner.next();
        System.out.println("请输入年龄：");
        int age = scanner.nextInt();
        System.out.println("请输入车牌号：");
        String licensePlateNumber = scanner.next();
        parkingSpaces.add(new ParkingSpace(id, name, gender, age, licensePlateNumber));
        System.out.println("添加成功！");
    }

    // 删除停车位信息
    private static void deleteParkingSpace(ArrayList<ParkingSpace> parkingSpaces, Scanner scanner) {
        System.out.println("请输入要删除的车位号：");
        int id = scanner.nextInt();
        for (ParkingSpace parkingSpace : parkingSpaces) {
            if (parkingSpace.getId() == id) {
                parkingSpaces.remove(parkingSpace);
                System.out.println("删除成功！");
                return;
            }
        }
        System.out.println("未找到车位号为" + id + "的停车位。");
    }

    // 修改停车位信息
    private static void updateParkingSpace(ArrayList<ParkingSpace> parkingSpaces, Scanner scanner) {
        System.out.println("请输入要修改的车位号：");
        int id = scanner.nextInt();
        for (ParkingSpace parkingSpace : parkingSpaces) {
            if (parkingSpace.getId() == id) {
                System.out.println("请输入新的车主姓名（原值：" + parkingSpace.getName() + "）：");
                String name = scanner.next();
                System.out.println("请输入新的性别（原值：" + parkingSpace.getGender() + "）：");
                String gender = scanner.next();
                System.out.println("请输入新的年龄（原值：" + parkingSpace.getAge() + "）：");
                int age = scanner.nextInt();
                System.out.println("请输入新的车牌号（原值：" + parkingSpace.getLicensePlateNumber() + "）：");
                String licensePlateNumber = scanner.next();
                parkingSpace.setName(name);
                parkingSpace.setGender(gender);
                parkingSpace.setAge(age);
                parkingSpace.setLicensePlateNumber(licensePlateNumber);
                System.out.println("修改成功！");
                return;
            }
        }
        System.out.println("未找到车位号为" + id + "的停车位。");
    }

    // 显示所有停车位信息
    private static void showAllParkingSpaces(ArrayList<ParkingSpace> parkingSpaces) {
        System.out.println("车位号\t车主姓名\t性别\t年龄\t车牌号");
        for (ParkingSpace parkingSpace : parkingSpaces) {
            System.out.println(parkingSpace.getId() + "\t" + parkingSpace.getName() + "\t" +
                    parkingSpace.getGender() + "\t" + parkingSpace.getAge() + "\t" +
                    parkingSpace.getLicensePlateNumber());
        }
    }

    // 将停车位信息保存到文件中
    private static void saveParkingSpacesToFile(ArrayList<ParkingSpace> parkingSpaces) {
        try {
            FileWriter writer = new FileWriter("out.txt");
            writer.write("车位号\t车主姓名\t性别\t年龄\t车牌号\n");
            for (ParkingSpace parkingSpace : parkingSpaces) {
                writer.write(parkingSpace.getId() + "\t" + parkingSpace.getName() + "\t" +
                        parkingSpace.getGender() + "\t" + parkingSpace.getAge() + "\t" +
                        parkingSpace.getLicensePlateNumber() + "\n");
            }
            writer.close();
        } catch (IOException e) {
            System.out.println("保存文件时出错：" + e.getMessage());
        }
    }

}

// 停车位类
class ParkingSpace {
    private int id;  // 车位号
    private String name;  // 车主姓名
    private String gender;  // 性别
    private int age;  // 年龄
    private String licensePlateNumber;  // 车牌号

    public ParkingSpace(int id, String name, String gender, int age, String licensePlateNumber) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.licensePlateNumber = licensePlateNumber;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getLicensePlateNumber() {
        return licensePlateNumber;
    }

    public void setLicensePlateNumber(String licensePlateNumber) {
        this.licensePlateNumber = licensePlateNumber;
    }
}

以上代码创建了一个停车场信息管理系统，可以添加、删除、修改和显示停车位信息，并将停车位信息保存到文件中（out.txt）。用户可以通过控制台输入选择操作。