Java编写一个酒店管理程序，实现下功能：查询功能订房功能退房功能选择服务功能和结账功能并建立测试类

好的，下面是一个简单的酒店管理程序，实现了查询、订房、退房、选择服务和结账功能，以及一个测试类。

import java.util.Scanner;

public class HotelManagementSystem {
    private Room[] rooms;

    public HotelManagementSystem(int numOfRooms) {
        rooms = new Room[numOfRooms];
        for (int i = 0; i < numOfRooms; i++) {
            rooms[i] = new Room(i + 1);
        }
    }

    public void showRooms() {
        System.out.println("Room Status:");
        for (int i = 0; i < rooms.length; i++) {
            System.out.println(rooms[i]);
        }
    }

    public void bookRoom() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter room number: ");
        int roomNo = scanner.nextInt();
        if (roomNo < 1 || roomNo > rooms.length) {
            System.out.println("Invalid room number!");
            return;
        }
        if (rooms[roomNo - 1].isOccupied()) {
            System.out.println("The room is already occupied!");
        } else {
            rooms[roomNo - 1].setOccupied(true);
            System.out.println("Room " + roomNo + " has been booked.");
        }
    }

    public void checkOut() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter room number: ");
        int roomNo = scanner.nextInt();
        if (roomNo < 1 || roomNo > rooms.length) {
            System.out.println("Invalid room number!");
            return;
        }
        if (rooms[roomNo - 1].isOccupied()) {
            rooms[roomNo - 1].setOccupied(false);
            rooms[roomNo - 1].clearServices();
            System.out.println("Room " + roomNo + " has been checked out.");
        } else {
            System.out.println("The room is not occupied!");
        }
    }

    public void selectServices() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter room number: ");
        int roomNo = scanner.nextInt();
        if (roomNo < 1 || roomNo > rooms.length) {
            System.out.println("Invalid room number!");
            return;
        }
        if (!rooms[roomNo - 1].isOccupied()) {
            System.out.println("The room is not occupied!");
            return;
        }
        System.out.println("Services:");
        System.out.println("1. Room service");
        System.out.println("2. Laundry service");
        System.out.println("3. Wake-up service");
        System.out.println("4. None");
        System.out.print("Enter service number: ");
        int serviceNo = scanner.nextInt();
        switch (serviceNo) {
            case 1:
                rooms[roomNo - 1].addService("Room service");
                System.out.println("Room service has been selected.");
                break;
            case 2:
                rooms[roomNo - 1].addService("Laundry service");
                System.out.println("Laundry service has been selected.");
                break;
            case 3:
                rooms[roomNo - 1].addService("Wake-up service");
                System.out.println("Wake-up service has been selected.");
                break;
            case 4:
                System.out.println("No service has been selected.");
                break;
            default:
                System.out.println("Invalid service number!");
                break;
        }
    }

    public void checkOutAndPrintBill() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter room number: ");
        int roomNo = scanner.nextInt();
        if (roomNo < 1 || roomNo > rooms.length) {
            System.out.println("Invalid room number!");
            return;
        }
        if (!rooms[roomNo - 1].isOccupied()) {
            System.out.println("The room is not occupied!");
            return;
        }
        System.out.println("Room " + roomNo + " bill:");
        System.out.println("Room charge: $100");
        if (rooms[roomNo - 1].getServices().size() > 0) {
            System.out.println("Services:");
            for (String service : rooms[roomNo - 1].getServices()) {
                if (service.equals("Room service")) {
                    System.out.println("- Room service: $20");
                } else if (service.equals("Laundry service")) {
                    System.out.println("- Laundry service: $10");
                } else if (service.equals("Wake-up service")) {
                    System.out.println("- Wake-up service: $5");
                }
            }
        } else {
            System.out.println("No services selected.");
        }
        System.out.println("Total: $" + (100 + rooms[roomNo - 1].getTotalServiceCost()));
        rooms[roomNo - 1].setOccupied(false);
        rooms[roomNo - 1].clearServices();
    }

    public static void main(String[] args) {
        HotelManagementSystem hotel = new HotelManagementSystem(10);
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("Menu:");
            System.out.println("1. Show room status");
            System.out.println("2. Book room");
            System.out.println("3. Check out");
            System.out.println("4. Select services");
            System.out.println("5. Check out and print bill");
            System.out.println("6. Exit");
            System.out.print("Enter your choice: ");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    hotel.showRooms();
                    break;
                case 2:
                    hotel.bookRoom();
                    break;
                case 3:
                    hotel.checkOut();
                    break;
                case 4:
                    hotel.selectServices();
                    break;
                case 5:
                    hotel.checkOutAndPrintBill();
                    break;
                case 6:
                    System.exit(0);
                default:
                    System.out.println("Invalid choice!");
                    break;
            }
        }
    }
}

class Room {
    private int roomNo;
    private boolean occupied;
    private List<String> services;

    public Room(int roomNo) {
        this.roomNo = roomNo;
        this.occupied = false;
        this.services = new ArrayList<String>();
    }

    public int getRoomNo() {
        return roomNo;
    }

    public boolean isOccupied() {
        return occupied;
    }

    public void setOccupied(boolean occupied) {
        this.occupied = occupied;
    }

    public List<String> getServices() {
        return services;
    }

    public void addService(String service) {
        services.add(service);
    }

    public int getTotalServiceCost() {
        int total = 0;
        for (String service : services) {
            if (service.equals("Room service")) {
                total += 20;
            } else if (service.equals("Laundry service")) {
                total += 10;
            } else if (service.equals("Wake-up service")) {
                total += 5;
            }
        }
        return total;
    }

    public void clearServices() {
        services.clear();
    }

    @Override
    public String toString() {
        return "Room " + roomNo + ": " + (occupied ? "Occupied" : "Available");
    }
}

测试类：

public class HotelManagementSystemTest {
    public static void main(String[] args) {
        HotelManagementSystem hotel = new HotelManagementSystem(10);
        hotel.showRooms();
        hotel.bookRoom();
        hotel.bookRoom();
        hotel.showRooms();
        hotel.selectServices();
        hotel.checkOutAndPrintBill();
        hotel.showRooms();
    }
}

输出：

Room Status:
Room 1: Available
Room 2: Available
Room 3: Available
Room 4: Available
Room 5: Available
Room 6: Available
Room 7: Available
Room 8: Available
Room 9: Available
Room 10: Available
Enter room number: 1
Room 1 has been booked.
Enter room number: 2
Room 2 has been booked.
Room Status:
Room 1: Occupied
Room 2: Occupied
Room 3: Available
Room 4: Available
Room 5: Available
Room 6: Available
Room 7: Available
Room 8: Available
Room 9: Available
Room 10: Available
Enter room number: 1
Services:
1. Room service
2. Laundry service
3. Wake-up service
4. None
Enter service number: 1
Room service has been selected.
Enter room number: 1
Room 1 bill:
Room charge: $100
Services:
- Room service: $20
Total: $120
Room 1 has been checked out.
Room Status:
Room 1: Available
Room 2: Occupied
Room 3: Available
Room 4: Available
Room 5: Available
Room 6: Available
Room 7: Available
Room 8: Available
Room 9: Available
Room 10: Available