i am new to swing

hello friends,

i am new to swings and was pastly working with AWT now that i want to convert my AWT desktop application to swings i have simply placed a keyword "j" before all the components but it is not working. please have a look at the code and help me out thanks,

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class tmpswing extends JFrame implements ActionListener

{

JButton blogin;

tmpswing()

{setTitle("in constructor");

setLayout(null);

setLocation(50,50);

setVisible(true);

setSize(500,500);

JLabel lid=new JLabel("User Id",0);

lid.setLocation(150,200);

lid.setSize(50,20);

lid.setVisible(true);

add(lid);

JLabel lpassword=new JLabel("Password",0);

lpassword.setLocation(150,240);

lpassword.setSize(70,20);

lpassword.setVisible(true);

add(lpassword);

JTextField tfuid=new JTextField();

tfuid.setLocation(220,200);

tfuid.setSize(130,20);

tfuid.setVisible(true);

add(tfuid);

tfuid.setText("");

JTextField tfpassword=new JTextField();

tfpassword.setLocation(220,240);

tfpassword.setSize(130,20);

tfpassword.setVisible(true);

add(tfpassword);

tfpassword.setText("");

blogin=new JButton("Log In");

blogin.setLocation(220,300);

blogin.setSize(50,20);

blogin.setVisible(true);

add(blogin);

blogin.addActionListener(this);

setTitle("constructor ends");

}

public void actionPerformed(ActionEvent ae)

{

try{

if(ae.getSource()==blogin)

{

setTitle("login button pressed");

}

}

catch(Exception e)

{}

}

public static void main(String args[])

{

tmpswing j=new tmpswing();

}

}

[1865 byte] By [suhail_anwar_khana] at [2007-10-3 8:35:16]