问好。想知道如果任何人能告诉我WATS与我的代码错了，自达GUI appeas BT lgin部分不work.it的是jogin数据库系统

package ld;

import javax.swing.*;

import java.sql.*;

import java.awt.*;

import java.awt.event.*;

class LoginDemo extends JFrame{

JButton SUBMIT;

JLabel label1,label2;

final JTextField  text1,text2;

LoginDemo(){

setTitle("Login Form");

setLayout(null);

label1 = new JLabel();

label1.setText("Username:");

text1 = new JTextField(15);

label2 = new JLabel();

label2.setText("Password:");

text2 = new JPasswordField(15);

SUBMIT=new JButton("SUBMIT");

label1.setBounds(350,100,100,20);

text1.setBounds(450,100,200,20);

label2.setBounds(350,130,100,20);

text2.setBounds(450,130,200,20);

SUBMIT.setBounds(450,160,100,20);

add(label1);

add(text1);

add(label2);

add(text2);

add(SUBMIT);

setVisible(true);

setSize(1024,768);

SUBMIT.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent ae){

String value1=text1.getText();

String value2=text2.getText();

try{

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con = DriverManager.getConnection("jdbc:odbc:logindb");

Statement st=con.createStatement();

ResultSet rs=st.executeQuery("select * from login where username='"+value1+"' and password='"+value2+"'");

String uname="",pass="";

if(rs.next()){

uname=rs.getString("username");

pass=rs.getString("password");

}

if(value1.equals("") && value2.equals("")) {

JOptionPane.showMessageDialog(null,"Enter login name or password","Error",JOptionPane.ERROR_MESSAGE);

  }

else if(value1.equals(uname) && value2.equals(pass)) {

    NextPage page=new NextPage(uname);

page.setVisible(true);

    }

else if (!value1.equals(uname) && !value2.equals(pass)) {

text1.setText("");

text2.setText("");

 } 

   }

 catch(Exception e){

}

}

});  }

 public static void main(String arg[]){

  new LoginDemo();

}

}

第二类:

{C}
[删除的电子邮件请发送电子邮件]我@ gmail.com，如果你有什么可以帮我
谢谢