Hi Friend,

Login Authentication with MySql using Java Swing:

1)Create a java class CreateAccount.java

import javax.swing.*;
import java.awt.*;
import java.sql.*;
import java.awt.event.*;
class CreateAccount extends JFrame{
JTextField text1,text2,text3,text4,text5;
JPasswordField pass1;
JLabel label1,label2,label3,label4,label5,label6;
JPanel panel;
JButton button,button1;
CreateAccount() {
text1=new JTextField(15);
text2=new JTextField(15);
text3=new JTextField(15);
pass1=new JPasswordField(15);
text4=new JTextField(15);
text5=new JTextField(15);
label1=new JLabel("First Name");
label2=new JLabel("Last Name");
label3=new JLabel("User Name");
label4=new JLabel("Password");
label5=new JLabel("Address");
label6=new JLabel("Phone No");
button=new JButton("Save");
button1=new JButton("Exit");
panel=new JPanel(new GridLayout(7,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(label3);
panel.add(text3);
panel.add(label4);
panel.add(pass1);
panel.add(label5);
panel.add(text4);
panel.add(label6);
panel.add(text5);
panel.add(button);
panel.add(button1);
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
String value1=text1.getText();
String value2=text2.getText();
String value3=text3.getText();
String value4=pass1.getText();
String value5=text4.getText();
String value6=text5.getText();

Connection con = null;
String url = "jdbc:mysql://localhost:3306/";;
String db = "test";
String driver = "com.mysql.jdbc.Driver";
String user = "root";
String pass = "root";
String user1="";
String pass1="";
try{
Class.forName(driver);
con = DriverManager.getConnection(url+db, user, pass);
Statement st = con.createStatement();
int i=st.executeUpdate("insert into login(firstname,lastname,username,password,address,contactno) values('"+value1+"','"+value2+"','"+value3+"','"+value4+"','"+value5+"','"+value6+"')");
JOptionPane.showMessageDialog(null,"Data is successfully saved.");
}
catch(Exception e){}
}
});
button1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
setVisible(false);
}
});
add(panel);
setSize(300,400);
}

}

continue...

2)Create LoginDemo.java:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
class LoginDemo extends JFrame{
JButton SUBMIT,ADD;
JPanel panel;
JLabel label1,label2;
final JTextField text1;
final JPasswordField text2;
LoginDemo(){
label1 = new JLabel();
label1.setText("UserName:");
text1 = new JTextField(15);
label2 = new JLabel();
label2.setText("Password:");
text2 = new JPasswordField(15);
SUBMIT=new JButton("Login");
ADD=new JButton("Create Account");
panel=new JPanel(new GridLayout(3,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(SUBMIT);
panel.add(ADD);
add(panel,BorderLayout.CENTER);
SUBMIT.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
String value1=text1.getText();
String value2=text2.getText();
Connection con = null;
String url = "jdbc:mysql://localhost:3306/";;
String db = "test";
String driver = "com.mysql.jdbc.Driver";
String user = "root";
String pass = "root";
String user1="";
String pass1="";
try{
Class.forName(driver);
con = DriverManager.getConnection(url+db, user, pass);
Statement st = con.createStatement();
ResultSet res = st.executeQuery("SELECT * FROM login where username='"+value1+"' && password='"+value2+"'");
while (res.next()) {
user1 = res.getString("username");
pass1 = res.getString("password");
}
if (value1.equals(user1) && value2.equals(pass1)) {
JOptionPane.showMessageDialog(null,"Welcome "+user1+", You have successfully Login");
}
else{
JOptionPane.showMessageDialog(null,"Incorrect login or password","Error",JOptionPane.ERROR_MESSAGE);
}
}
catch(Exception e){
System.out.println(e.getMessage());
}
}
});
ADD.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
CreateAccount account=new CreateAccount();
account.setVisible(true);
}
});
setTitle("FORM");
}


public static void main(String arg[]) {
LoginDemo frame=new LoginDemo();
frame.setSize(300,100);
frame.setVisible(true);
}
}

If you want the Login application in JSP,visit the following link:

http://www.roseindia.net/jsp/loginbean.shtml

Thanks

hey i have taken your code and modified it as below. the problem is i am unable to call my login page from my start page. its not opening the login page when i click on login. can anyone help.. please its urgent..

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

class Login extends JFrame
{

    JButton SUBMIT,ADD;

    JPanel panel;

    JLabel label1,label2;

    final JTextField text1;

    final JPasswordField text2;

    Login(){

        label1 = new JLabel();

        label1.setText("UserName:");

        text1 = new JTextField(15);

        label2 = new JLabel();

        label2.setText("Password:");

        text2 = new JPasswordField(15);

        SUBMIT=new JButton("Login");

        ADD=new JButton("Create Account");

        panel=new JPanel(new GridLayout(3,2));

        panel.add(label1);

        panel.add(text1);

        panel.add(label2);

        panel.add(text2);

        panel.add(SUBMIT);

        panel.add(ADD);

        add(panel,BorderLayout.CENTER);

        SUBMIT.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent ae){


                String value1=text1.getText();

                String value2=text2.getText();

                  if (value1 == null || value1.equals("")) {
                    JOptionPane.showMessageDialog(null, "Enter user id", "Missing field", JOptionPane.DEFAULT_OPTION);

                    return;
                }
                    if (value2 == null || value2.equals("")) {
                    JOptionPane.showMessageDialog(null, "Enter password", "Missing field", JOptionPane.DEFAULT_OPTION);

                    return;
                }

                Connection con = null;

                String url="jdbc:mysql://localhost:3306/";

                String db="pharma";

                String driver="com.mysql.jdbc.Driver";

                String user="root";

                String pass="root";

                String user1="";

                String pass1="";

                try
                {

                    Class.forName(driver);

                    con = DriverManager.getConnection(url+db, user, pass);

                    Statement st = con.createStatement();

                    ResultSet res = st.executeQuery("SELECT * FROM login where username='"+value1+"' && password='"+value2+"'");

                    while (res.next()) {

                        user1 = res.getString("username");

                        pass1 = res.getString("password");

                    }

                    if (value1.equals(user1) && value2.equals(pass1)) {

                        dispose();

                        JOptionPane.showMessageDialog(null,"Welcome "+user1+", You have successfully Login");

                         HcHome h=new HcHome();

            h.setBounds(0,0,1020,1000);

            h.setVisible(true);

                    }

                    else{

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

                    }

                }

                catch(Exception e){

                    System.out.println(e.getMessage());

                }

            }

        });

        ADD.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent ae){

                CreateAccount account=new CreateAccount();

                account.setVisible(true);

            }

        });

}


public static void main(String arg[]) {
 Login l=new Login();
 l.setBounds(90,150,200,30);
 l.setSize(300,100);
 l.setVisible(true);
  l.setTitle("LOGIN PAGE");
 }
}


here is my start page:-

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.sql.*;

public class Start extends JFrame 

//implements KeyListener

 {
   JLabel title,title1,title2,line,image;

   JButton Login,Back;

   JPanel p;

   int key;

   String b;

   public Start()

    {

      setLayout(null);

      setTitle("Start");

      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      title=new JLabel("WELCOME TO AYURVEDA");

      title.setFont(new Font("arial",Font.BOLD,50));

      title.setForeground(Color.red);

      title.setBounds(200,50,1000,70);

      title1=new JLabel("LUNA PHARMA");

      title1.setFont(new Font("arial",Font.BOLD,40));

      title1.setForeground(Color.RED);

      title1.setBounds(350,100,500,70);

      title2=new JLabel("GMP CERTIFIED UNIT");

      title2.setFont(new Font("arial",Font.BOLD,25));

      title2.setForeground(Color.red);

      title2.setBounds(360,150,500,60);

      line=new JLabel("------------------");

      line.setFont(new Font("arial",Font.BOLD,45));

      line.setForeground(Color.blue);

      line.setBounds(360,200,1000,30);

      getContentPane().add(title);

      getContentPane().add(title1);

      getContentPane().add(title2);

      getContentPane().add(line);

      Login=new JButton("Login");

      Login.setMnemonic(KeyEvent.VK_A);

      Login.setToolTipText("Press it to login");

      Login.setFont(new Font("arial",Font.BOLD,20));

      //Login.addActionListener(this);

     //  Login.addKeyListener(this);

      getContentPane().add(Login);

         Back=new JButton("Exit");

      Back.setMnemonic(KeyEvent.VK_B);

      Back.setToolTipText("Press it to Exit");

      Back.setFont(new Font("arial",Font.BOLD,20));

     // Back.addActionListener(this);

      // Back.addKeyListener(this);

      getContentPane().add(Back);


        p=new JPanel();

      p.setLayout(new GridLayout(1,3));

      p.setBounds(330,650,350,30);

      p.add(Login);

      p.add(Back);

      getContentPane().add(p);

      image=new JLabel(new ImageIcon("images/Front.jpg"));

      image.setBounds(100,250,900,500);

      getContentPane().add(image);

      setSize(1020,1000);

      setVisible(true);


      Back.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent ae){
                   {

                            dispose();

                   }

    }
             });

        Login.addActionListener(new ActionListener(){

   public void actionPerformed(ActionEvent ae)

    {


        Login l=new Login();

       }
      });

      }


   /*public void keyPressed(KeyEvent ke)

    {

      key=ke.getKeyCode();

       if(key==KeyEvent.VK_A)

        {

          Login l=new Login();

        }
        if(key==KeyEvent.VK_B)

        {

          dispose();

        }



    }*/

   ///public void keyTyped(KeyEvent ke){}

  // public void keyReleased(KeyEvent ke){}

   public static void main(String args[])

    {

      Start sf=new Start();
      sf.setVisible(true);

    }

  }

Thanks a lot mugelan........! You are great in such a simple you have written a the above code.....! I understand it very easily.....and i successfully get through the first step of my project. god bless you..!