用java写宾馆管理系统，swing写界面，用io流

好的，我明白了你的要求。以下是一个简单的宾馆管理系统的示例，使用Java编写，使用Swing库构建界面，并使用IO流进行数据的读写操作。

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.util.ArrayList;
import java.util.List;

class Room implements Serializable {
    private int roomNumber;
    private String guestName;

    public Room(int roomNumber) {
        this.roomNumber = roomNumber;
        this.guestName = "";
    }

    public int getRoomNumber() {
        return roomNumber;
    }

    public String getGuestName() {
        return guestName;
    }

    public void setGuestName(String guestName) {
        this.guestName = guestName;
    }
}

class Hotel implements Serializable {
    private List<Room> rooms;

    public Hotel(int roomCount) {
        rooms = new ArrayList<>();
        for (int i = 1; i <= roomCount; i++) {
            rooms.add(new Room(i));
        }
    }

    public List<Room> getRooms() {
        return rooms;
    }

    public void checkIn(int roomNumber, String guestName) {
        for (Room room : rooms) {
            if (room.getRoomNumber() == roomNumber) {
                room.setGuestName(guestName);
                break;
            }
        }
    }

    public void checkOut(int roomNumber) {
        for (Room room : rooms) {
            if (room.getRoomNumber() == roomNumber) {
                room.setGuestName("");
                break;
            }
        }
    }
}

class HotelManagementSystem extends JFrame implements ActionListener {
    private JTextField tfRoomNumber, tfGuestName;
    private JTextArea taStatus;
    private JButton btnCheckIn, btnCheckOut;

    private Hotel hotel;

    public HotelManagementSystem() {
        setTitle("Hotel Management System");
        setSize(400, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(4, 2));

        panel.add(new JLabel("Room Number:"));
        tfRoomNumber = new JTextField();
        panel.add(tfRoomNumber);

        panel.add(new JLabel("Guest Name:"));
        tfGuestName = new JTextField();
        panel.add(tfGuestName);

        btnCheckIn = new JButton("Check In");
        btnCheckIn.addActionListener(this);
        panel.add(btnCheckIn);

        btnCheckOut = new JButton("Check Out");
        btnCheckOut.addActionListener(this);
        panel.add(btnCheckOut);

        taStatus = new JTextArea();
        panel.add(taStatus);

        add(panel);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == btnCheckIn) {
            int roomNumber = Integer.parseInt(tfRoomNumber.getText());
            String guestName = tfGuestName.getText();
            hotel.checkIn(roomNumber, guestName);
            updateStatus();
        } else if (e.getSource() == btnCheckOut) {
            int roomNumber = Integer.parseInt(tfRoomNumber.getText());
            hotel.checkOut(roomNumber);
            updateStatus();
        }
    }

    private void updateStatus() {
        StringBuilder sb = new StringBuilder();
        for (Room room : hotel.getRooms()) {
            sb.append("Room ").append(room.getRoomNumber()).append(": ");
            if (room.getGuestName().isEmpty()) {
                sb.append("Vacant\n");
            } else {
                sb.append("Occupied by ").append(room.getGuestName()).append("\n");
            }
        }
        taStatus.setText(sb.toString());
    }

    public void loadHotelData() {
        try {
            FileInputStream fileIn = new FileInputStream("hotel.dat");
            ObjectInputStream in = new ObjectInputStream(fileIn);
            hotel = (Hotel) in.readObject();
            in.close();
            fileIn.close();
        } catch (IOException | ClassNotFoundException e) {
            hotel = new Hotel(10);
        }
    }

    public void saveHotelData() {
        try {
            FileOutputStream fileOut = new FileOutputStream("hotel.dat");
            ObjectOutputStream out = new ObjectOutputStream(fileOut);
            out.writeObject(hotel);
            out.close();
            fileOut.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void display() {
        setVisible(true);
        updateStatus();
    }
}

public class HotelManagementSystemApp {
    public static void main(String[] args) {
        HotelManagementSystem hms = new HotelManagementSystem();
        hms.loadHotelData();
        hms.display();
        hms.saveHotelData();
    }
}

这个示例中，我们定义了两个类：`Room` 和 `Hotel`。`Room` 类表示一个宾馆房间，包括房间号和入住客人的姓名。`Hotel` 类表示整个宾馆，包含多个房间。

`HotelManagementSystem` 类是宾馆管理系统的主界面，继承自 `JFrame`。在构造函数中，我们设置了界面的标题、大小和布局，并创建了输入框、按钮和文本区域等组件。我们还实现了 `ActionListener` 接口，通过重写 `actionPerformed` 方法来处理按钮的点击事件。

在 `loadHotelData` 方法中，我们尝试从文件中读取宾馆数据，如果文件不存在或读取失败，则创建一个新的宾馆对象。在 `saveHotelData` 方法中，我们将宾馆数据保存到文件中。

在 `main` 方法中，我们创建了一个 `HotelManagementSystem` 对象，加载宾馆数据、显示界面，并在程序退出时保存宾馆数据。

请注意，在实际应用中，您可能需要进一步添加错误处理、输入验证、日志记录等功能。此示例仅供参考，你可以根据实际需求进行修改和扩展。