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DILEEPKRISHNA
login page
1 Answer(s)      5 years and 11 months ago
Posted in : Java Beginners

code for login page

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May 19, 2011 at 11:37 AM


Login Page in Java Swing:

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("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+"'");
           int count=0;
           while(rs.next()){
               count++;
           }
 if(count>0) {
       JOptionPane.showMessageDialog(null,"Welcome: "+value1);

    }
 else {

     JOptionPane.showMessageDialog(null,"Error!");
     text1.setText("");
     text2.setText("");
     }
    }
    catch(Exception e){}
}
 });
  }
  public static void main(String arg[]){
  new LoginDemo();
}
}









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