Hi Friend,

Try the following code:

1)LoginDemo.java:

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

class Login 
{
 JButton SUBMIT;
 JLabel label1,label2;
 final JTextField  text1,text2;
  Login()
  {
      final JFrame f=new JFrame("Login Form");
      f.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);
   f.add(label1);
   f.add(text1);
   f.add(label2);
   f.add(text2);
   f.add(SUBMIT);


  f.setVisible(true);
  f.setSize(1024,768);

 SUBMIT.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent ae)
  {
    String value1=text1.getText();
    String value2=text2.getText();
    try{
 Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           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(uname) && value2.equals(pass)) {
            f.setVisible(false);
    NextPage page=new NextPage(uname);
    page.setVisible(true);
     }
    else{
     JOptionPane.showMessageDialog(null,"Incorrect login or password","Error",JOptionPane.ERROR_MESSAGE);
     text1.setText("");
     text2.setText("");

  }
    }
    catch(Exception e){}
}
 });
  }
}
 class LoginDemo
{
  public static void main(String arg[]){

    new Login();
}
}

2)NextPage.java:

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

class NextPage extends JFrame
{
  NextPage(String st)
   {
      setLayout(null);
     setDefaultCloseOperation(javax.swing. WindowConstants.DISPOSE_ON_CLOSE);
     setTitle("Welcome");
     JLabel lab=new JLabel("Welcome  "+st);
     lab.setBounds(10,10,500,20);
     add(lab);
       setSize(1024, 768);
      }
 }

Thanks

NextPage page=new NextPage(uname); page.setVisible(true);

not defined

Error: Could not find or load main class Login.BLA

can u explain in what order i have to compile and execute the above code. i got this error

C:\Program Files\Java\jdk1.6.0\bin>javac LoginDemo.java .\NextPage.java:15: reached end of file while parsing }â?? ^