用Java写一个人脸识别的酒店管理系统

好的，以下是一个简单的人脸识别的酒店管理系统的Java代码示例：

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

public class HotelManagementSystem {
    private ArrayList<Guest> guests;

    public HotelManagementSystem() {
        guests = new ArrayList<>();
    }

    public void addGuest(Guest guest) {
        guests.add(guest);
    }

    public void removeGuest(Guest guest) {
        guests.remove(guest);
    }

    public void listGuests() {
        for (Guest guest : guests) {
            System.out.println(guest);
        }
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        HotelManagementSystem hotel = new HotelManagementSystem();

        while (true) {
            System.out.println("1. Add Guest");
            System.out.println("2. Remove Guest");
            System.out.println("3. List Guests");
            System.out.println("4. Exit");
            System.out.print("Enter your choice: ");

            int choice = scanner.nextInt();
            scanner.nextLine();

            switch (choice) {
                case 1:
                    System.out.print("Enter guest name: ");
                    String name = scanner.nextLine();
                    System.out.print("Enter guest age: ");
                    int age = scanner.nextInt();
                    scanner.nextLine();
                    System.out.print("Enter guest gender: ");
                    String gender = scanner.nextLine();
                    System.out.print("Enter guest face image: ");
                    String faceImage = scanner.nextLine();
                    hotel.addGuest(new Guest(name, age, gender, faceImage));
                    break;
                case 2:
                    System.out.print("Enter guest name: ");
                    String removeName = scanner.nextLine();
                    for (Guest guest : hotel.guests) {
                        if (guest.getName().equals(removeName)) {
                            hotel.removeGuest(guest);
                            System.out.println(removeName + " removed.");
                            break;
                        }
                    }
                    break;
                case 3:
                    hotel.listGuests();
                    break;
                case 4:
                    System.exit(0);
                default:
                    System.out.println("Invalid choice.");
            }
        }
    }
}

class Guest {
    private String name;
    private int age;
    private String gender;
    private String faceImage;

    public Guest(String name, int age, String gender, String faceImage) {
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.faceImage = faceImage;
    }

    public String getName() {
        return name;
    }

    @Override
    public String toString() {
        return "Guest{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", gender='" + gender + '\'' +
                ", faceImage='" + faceImage + '\'' +
                '}';
    }
}

该代码中，Guest类表示一个酒店客人，包括姓名、年龄、性别和人脸图像等属性。HotelManagementSystem类表示酒店管理系统，包括添加客人、删除客人和列出客人等操作。在添加客人时，需要输入客人的信息，包括姓名、年龄、性别和人脸图像。在删除客人时，需要输入客人的姓名。在列出客人时，将打印出所有客人的信息。

然而，如何实现人脸识别功能，则需要使用到一些第三方的人脸识别库或API，这里不再赘述。