PPT Slide

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

import java.awt.*;

public class StopWatch extends JLabel implements ActionListener{

int count = 0;

public StopWatch(){

super("Elapsed Time: 0 secs", JLabel.CENTER);

Timer t = new Timer(1000, this); t.start();

}

public void actionPerformed(ActionEvent e){

this.setText("Elapsed Time: " + count++ + " secs");

}

public static void main (String arg[]){

JFrame f = new JFrame();

f.setSize(300,100);

f.addWindowListener (new WindowAdapter()

{ public void windowClosing(WindowEvent e){

System.exit(0);}});

StopWatch c = new StopWatch();

f.getContentPane()

.setLayout(new BorderLayout());

f.getContentPane()

.add(c, BorderLayout.CENTER);

f.show();

} }