使用swing编写一个登录页面，登录成功运行public class Test { public static void main(String[] args) { FiveChessFrame f=new FiveChessFrame(); } }，用户名和密码都是admin，标题是六子棋

好的，下面是使用swing编写的登录页面的代码示例：

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

public class Login extends JFrame implements ActionListener {
    private JLabel usernameLabel, passwordLabel;
    private JTextField usernameField;
    private JPasswordField passwordField;
    private JButton loginButton, exitButton;

    public Login() {
        super("登录页面");
        this.setLayout(new GridLayout(3, 2));

        usernameLabel = new JLabel("用户名：");
        this.add(usernameLabel);

        usernameField = new JTextField(10);
        this.add(usernameField);

        passwordLabel = new JLabel("密码：");
        this.add(passwordLabel);

        passwordField = new JPasswordField(10);
        this.add(passwordField);

        loginButton = new JButton("登录");
        loginButton.addActionListener(this);
        this.add(loginButton);

        exitButton = new JButton("退出");
        exitButton.addActionListener(this);
        this.add(exitButton);

        this.pack();
        this.setLocationRelativeTo(null);
        this.setVisible(true);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

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

            if (username.equals("admin") && password.equals("admin")) {
                JOptionPane.showMessageDialog(this, "登录成功！");
                new FiveChessFrame();
                this.dispose();
            } else {
                JOptionPane.showMessageDialog(this, "用户名或密码错误！");
            }
        } else if (e.getSource() == exitButton) {
            System.exit(0);
        }
    }

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

当用户输入正确的用户名和密码后，程序会弹出一个提示框，提示用户登录成功，并且创建一个六子棋的窗口。如果用户名或密码错误，则会弹出一个提示框，提示用户错误信息。