How to create a Form using Java applet

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.applet.Applet.*;
import java.lang.*;
public class loginForm extends Frame implements ActionListener
{
Label lblUname
;
Label lblPass;
Label lblblnk;
TextField usrTxt;
TextField pwdTxt;
Button btn;
public loginForm()
{
lblUname = new Label("user name");
lblPass  = new Label("password");
lblblnk  = new Label(" ");
usrTxt = new TextField();
pwdTxt = new TextField();
btn = new Button("button");
add(lblUname);
add(lblPass);
add(usrTxt);
add(pwdTxt);
add(btn);
add(lblblnk);
lblUname.setBounds(0,10,100,40);
lblPass.setBounds(0,50,100,90);
usrTxt.setBounds(110,10,210,40);
pwdTxt.setBounds(110,50,210,90);
btn.setBounds(150,110,210,130);
lblblnk.setBounds(0,130,200,150);
btn.addActionListener(this);
pwdTxt.setEchoChar('*');
addWindowListener(new mwa());
}
public void actionPerformed(ActionEvent e)
{
lblblnk.setText("Welcome " + usrTxt.getText());
}
public static void main(String[] args)
{
loginForm l = new loginForm();
l.setSize(new Dimension(600,600));
l.setTitle("Login");
l.setVisible(true);
}
}
class mwa extends WindowAdapter
{
public mwa() {}
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}