import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

public class clalc extends JFrame

{

JLabel l;

public void start()

{ l=new JLabel();

l.setText(" Name :");

JTextField txt=new JTextField();

txt.setText("");

JPasswordField ps=new JPasswordField(10);

JButton but=new JButton();

but.setText("Submit");

add(l);

add(txt);

add(ps);

add(but);

but.addActionListener( new ActionListener()

{ public void actionPerformed( ActionEvent e)

{ l.setText("Button clicked");

} } );

setLayout(new FlowLayout());

setSize(400,400); setVisible(true);

setDefaultCloseOperation(EXIT_ON_CLOSE);

}

public static void main(String args[])

{ new clalc().start();

} }