import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;public class DormitoryManagementLogin extends JFrame implements ActionListener { private JLabel titleLabel, usernameLabel, passwordLabel; private JTextField usernameField; private JPasswordField passwordField; private JButton loginButton, resetButton; public DormitoryManagementLogin() { super("Dormitory Management Login"); setSize(400, 300); setDefaultCloseOperation(EXIT_ON_CLOSE); titleLabel = new JLabel("Dormitory Management Login"); titleLabel.setFont(new Font("Arial", Font.BOLD, 20)); titleLabel.setForeground(Color.BLUE); titleLabel.setHorizontalAlignment(JLabel.CENTER); usernameLabel = new JLabel("Username:"); passwordLabel = new JLabel("Password:"); usernameField = new JTextField(); passwordField = new JPasswordField(); loginButton = new JButton("Login"); resetButton = new JButton("Reset"); loginButton.addActionListener(this); resetButton.addActionListener(this); JPanel panel = new JPanel(new GridLayout(3, 2)); panel.add(usernameLabel); panel.add(usernameField); panel.add(passwordLabel); panel.add(passwordField); panel.add(loginButton); panel.add(resetButton); add(titleLabel, BorderLayout.NORTH); add(panel, BorderLayout.CENTER); setVisible(true); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == loginButton) { String username = usernameField.getText(); String password = String.valueOf(passwordField.getPassword()); // 在这里添加登录验证逻辑 JOptionPane.showMessageDialog(this, "登录成功！"); // 登录成功后跳转到宿舍管理主界面 new DormitoryManagementMain(); dispose(); } else if (e.getSource() == resetButton) { usernameField.setText(""); passwordField.setText(""); } } public static void main(String[] args) { new DormitoryManagementLogin(); }}请修改代码错误

代码中没有明显的错误，但是为了使代码更加规范和易读，可以对其中一些部分进行优化。例如：

1. 在类名后面加上 `{}`，表示该类是一个独立的代码块。

2. 将 `JFrame.EXIT_ON_CLOSE` 改为 `WindowConstants.EXIT_ON_CLOSE`，使代码更加易读。

3. 将 `setDefaultCloseOperation(EXIT_ON_CLOSE)` 改为 `setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE)`。

4. 将 `String password = String.valueOf(passwordField.getPassword())` 改为 `String password = new String(passwordField.getPassword())`，因为 `String.valueOf()` 方法返回的是 char 数组的字符串表示形式，而不是密码字符串本身。

修改后的代码如下：

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class DormitoryManagementLogin extends JFrame implements ActionListener {

    private JLabel titleLabel, usernameLabel, passwordLabel;
    private JTextField usernameField;
    private JPasswordField passwordField;
    private JButton loginButton, resetButton;

    public DormitoryManagementLogin() {
        super("Dormitory Management Login");

        titleLabel = new JLabel("Dormitory Management Login");
        titleLabel.setFont(new Font("Arial", Font.BOLD, 20));
        titleLabel.setForeground(Color.BLUE);
        titleLabel.setHorizontalAlignment(JLabel.CENTER);

        usernameLabel = new JLabel("Username:");
        passwordLabel = new JLabel("Password:");

        usernameField = new JTextField();
        passwordField = new JPasswordField();

        loginButton = new JButton("Login");
        resetButton = new JButton("Reset");

        loginButton.addActionListener(this);
        resetButton.addActionListener(this);

        JPanel panel = new JPanel(new GridLayout(3, 2));
        panel.add(usernameLabel);
        panel.add(usernameField);
        panel.add(passwordLabel);
        panel.add(passwordField);
        panel.add(loginButton);
        panel.add(resetButton);

        add(titleLabel, BorderLayout.NORTH);
        add(panel, BorderLayout.CENTER);

        setSize(400, 300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == loginButton) {
            String username = usernameField.getText();
            String password = new String(passwordField.getPassword());

            // 在这里添加登录验证逻辑

            JOptionPane.showMessageDialog(this, "登录成功！");

            // 登录成功后跳转到宿舍管理主界面
            new DormitoryManagementMain();
            dispose();
        } else if (e.getSource() == resetButton) {
            usernameField.setText("");
            passwordField.setText("");
        }
    }

    public static void main(String[] args) {
        new DormitoryManagementLogin();
    }
}