Swings

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Swings

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December 10, 2009 at 3:51 PM

Hi Friend,

Try the following code:

1)LoginDemo.java :

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
class LoginDemo extends JFrame{
JButton SUBMIT;
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");
panel=new JPanel(new GridLayout(3,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(SUBMIT);
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 = "register";
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 user where username='"+value1+"' && password='"+value2+"'");
while (res.next()) {
user1 = res.getString("username");
pass1 = res.getString("password");
}
if (value1.equals(user1) && value2.equals(pass1)) {
NextPage page=new NextPage();
page.setVisible(true);
JLabel label = new JLabel("Welcome:"+value1);
page.getContentPane().add(label);
}
else{
JOptionPane.showMessageDialog(null,"Incorrect login or password","Error",JOptionPane.ERROR_MESSAGE);
}
}
catch(Exception e){
System.out.println(e.getMessage());
}
}
});
setTitle("FORM");
}
public static void main(String arg[]) {
LoginDemo frame=new LoginDemo();
frame.pack();
frame.setVisible(true);
}
}
2)NextPage.java:

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

class NextPage extends JFrame{
NextPage() {
setDefaultCloseOperation(javax.swing.
WindowConstants.DISPOSE_ON_CLOSE);
setTitle("Welcome");
setSize(400, 200);
}
}

Thanks

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