用Java编写一个酒店管理程序实现查询房间功能、订房功能、退房功能、选择服务功能和结账功能

好的，这里是一个简单的 Java 酒店管理程序的代码示例，它实现了查询房间、订房、退房、选择服务和结账等功能：

import java.util.Scanner;

public class HotelManagementSystem {
    
    private static final int NUM_ROOMS = 10; // 酒店房间数量
    private static final double ROOM_PRICE = 100; // 房间价格
    
    private static Room[] rooms; // 所有房间
    private static double revenue; // 总收入
    
    public static void main(String[] args) {
        rooms = new Room[NUM_ROOMS];
        for (int i = 0; i < NUM_ROOMS; i++) {
            rooms[i] = new Room(i + 1, "Single", RoomStatus.VACANT, null, 0);
        }
        revenue = 0;
        
        Scanner scanner = new Scanner(System.in);
        while (true) {
            displayMenu();
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    queryRooms();
                    break;
                case 2:
                    bookRoom();
                    break;
                case 3:
                    checkOut();
                    break;
                case 4:
                    selectService();
                    break;
                case 5:
                    checkOutAll();
                    break;
                case 6:
                    displayRevenue();
                    break;
                case 7:
                    System.out.println("程序已退出，欢迎下次再来！");
                    System.exit(0);
                    break;
                default:
                    System.out.println("无效的操作，请重新输入！");
                    break;
            }
        }
    }
    
    // 显示程序菜单
    private static void displayMenu() {
        System.out.println("欢迎使用酒店管理系统！");
        System.out.println("1. 查询房间");
        System.out.println("2. 订房");
        System.out.println("3. 退房");
        System.out.println("4. 选择服务");
        System.out.println("5. 结账");
        System.out.println("6. 显示总收入");
        System.out.println("7. 退出程序");
        System.out.print("请选择操作（1-7）：");
    }
    
    // 查询房间
    private static void queryRooms() {
        System.out.println("房间号\t房间类型\t房间状态\t客人姓名\t服务费用");
        for (Room room : rooms) {
            System.out.println(room);
        }
    }
    
    // 订房
    private static void bookRoom() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入要订的房间号：");
        int roomNumber = scanner.nextInt();
        Room room = getRoom(roomNumber);
        if (room == null) {
            System.out.println("房间不存在，请重新输入！");
            return;
        }
        if (room.getStatus() != RoomStatus.VACANT) {
            System.out.println("该房间已被占用，请重新选择！");
            return;
        }
        System.out.print("请输入客人姓名：");
        String customerName = scanner.next();
        room.setStatus(RoomStatus.BOOKED);
        room.setCustomerName(customerName);
        System.out.println("订房成功！");
    }
    
    // 退房
    private static void checkOut() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入要退的房间号：");
        int roomNumber = scanner.nextInt();
        Room room = getRoom(roomNumber);
        if (room == null) {
            System.out.println("房间不存在，请重新输入！");
            return;
        }
        if (room.getStatus() == RoomStatus.VACANT) {
            System.out.println("该房间未被占用，无法退房！");
            return;
        }
        double serviceFee = room.getServiceFee();
        revenue += ROOM_PRICE + serviceFee;
        room.setStatus(RoomStatus.VACANT);
        room.setCustomerName(null);
        room.setServiceFee(0);
        System.out.println("退房成功！");
    }
    
    // 选择服务
    private static void selectService() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入要选择服务的房间号：");
        int roomNumber = scanner.nextInt();
        Room room = getRoom(roomNumber);
        if (room == null) {
            System.out.println("房间不存在，请重新输入！");
            return;
        }
        if (room.getStatus() == RoomStatus.VACANT) {
            System.out.println("该房间未被占用，无法选择服务！");
            return;
        }
        System.out.println("请选择服务类型：");
        System.out.println("1. 早餐（10元）");
        System.out.println("2. 洗衣（20元）");
        System.out.println("3. 清洁（30元）");
        int serviceType = scanner.nextInt();
        double serviceFee = 0;
        switch (serviceType) {
            case 1:
                serviceFee = 10;
                break;
            case 2:
                serviceFee = 20;
                break;
            case 3:
                serviceFee = 30;
                break;
            default:
                System.out.println("无效的服务类型，请重新选择！");
                return;
        }
        room.setServiceFee(room.getServiceFee() + serviceFee);
        System.out.println("选择服务成功！");
    }
    
    // 退房所有房间
    private static void checkOutAll() {
        for (Room room : rooms) {
            if (room.getStatus() != RoomStatus.VACANT) {
                double serviceFee = room.getServiceFee();
                revenue += ROOM_PRICE + serviceFee;
                room.setStatus(RoomStatus.VACANT);
                room.setCustomerName(null);
                room.setServiceFee(0);
            }
        }
        System.out.println("所有房间已退房！");
    }
    
    // 显示总收入
    private static void displayRevenue() {
        System.out.println("总收入为：" + revenue + "元");
    }
    
    // 根据房间号获取房间对象
    private static Room getRoom(int roomNumber) {
        for (Room room : rooms) {
            if (room.getRoomNumber() == roomNumber) {
                return room;
            }
        }
        return null;
    }
}

enum RoomStatus {
    VACANT, BOOKED, OCCUPIED
}

class Room {
    private int roomNumber;
    private String roomType;
    private RoomStatus status;
    private String customerName;
    private double serviceFee;

    public Room(int roomNumber, String roomType, RoomStatus status, String customerName, double serviceFee) {
        this.roomNumber = roomNumber;
        this.roomType = roomType;
        this.status = status;
        this.customerName = customerName;
        this.serviceFee = serviceFee;
    }

    public int getRoomNumber() {
        return roomNumber;
    }

    public void setRoomNumber(int roomNumber) {
        this.roomNumber = roomNumber;
    }

    public String getRoomType() {
        return roomType;
    }

    public void setRoomType(String roomType) {
        this.roomType = roomType;
    }

    public RoomStatus getStatus() {
        return status;
    }

    public void setStatus(RoomStatus status) {
        this.status = status;
    }

    public String getCustomerName() {
        return customerName;
    }

    public void setCustomerName(String customerName) {
        this.customerName = customerName;
    }

    public double getServiceFee() {
        return serviceFee;
    }

    public void setServiceFee(double serviceFee) {
        this.serviceFee = serviceFee;
    }

    @Override
    public String toString() {
        return roomNumber + "\t" + roomType + "\t\t" + status + "\t\t" + customerName + "\t\t" + serviceFee;
    }
}

这个程序的具体实现细节可能还需要根据实际需求进行调整，但是基本的框架和思路应该是类似的。