import java.awt.*;
import java.awt.event.*;

public class VisApp extends Panel
{

	public void paint(Graphics g) 
	{
		 g.setColor(Color.red);
		 g.fillRect(100,100,100, 100);
	}

	public static void main(String[] args)
	{
		VisApp me = new VisApp();
		Frame F = new Frame("First Visual App");
		// next line allows window to be closed!!!
		F.addWindowListener(new Exiter() );
		F.add(me);
		me.setSize(600,600);
		F.setSize(600,600);
		F.show();
		F.repaint();
	}
}

class Exiter extends WindowAdapter
{
	  public void  windowClosing(WindowEvent e) 
	  { 
	  	    System.exit(0);
	  } 
}