请大家帮忙！！！

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

public class Login extends Frame implements ActionListener
{
//Frame f;
TextField t_name,t_pass;
TextField l_name,l_pass;
Button b_ok;

public Login()
{
Panel pp;

//f=new Frame("aa");
pp=new Panel();
pp.setLayout(new FlowLayout());
l_name=new TextField("姓名：");
l_name.setEditable(false);
l_pass=new TextField("密码：");
l_pass.setEditable(false);
t_name=new TextField("",10);
t_pass=new TextField("",10);
b_ok=new Button("确定");
b_ok.addActionListener(this);
pp.add(l_name);
pp.add(t_name);
pp.add(l_pass);
pp.add(t_pass);
setLayout(new BorderLayout());
add(pp,"Center");
add(b_ok,"South");
pack();
setVisible(true);

}

//监视器处理
public void actionperformed(ActionEvent e) //接口方法的实现
{
if(e.getSource()==b_ok)
{
b_ok_action();
}


}

//b_ok的实现
public void b_ok_action()
{


s_pass=u_pass.getText();
if (s_pass.equals("admin"))
{
System.out.println("登录成功！");
}

}

class Application1{
public static void main(String[] args){
new Login();
}

//主程序
//类结束
}