PPT Slide
Updater updater = new Updater();
width.addChangeListener(updater);
height.addChangeListener(updater);
public void windowClosing(WindowEvent e)
Container c = getContentPane();
c.setLayout(new BorderLayout());
c.add(width, BorderLayout.NORTH);
c.add(height, BorderLayout.WEST);
c.add(dynamicLabel, BorderLayout.CENTER);
public static void main(String[] args) {