//ShowHappyFaceRevised.java

import javax.swing.JFrame;

public class ShowHappyFaceRevised
{
    public static void main(String[] args)
    {
        JFrame app = new JFrame();
        HappyFaceRevised gui = new HappyFaceRevised();
        app.add(gui);

        WindowDestroyer listener = new WindowDestroyer();
        app.addWindowListener(listener);

        app.setSize(450, 400);
        app.setVisible(true);
    }
}