import java.awt.*;
import java.awt.event.*;
public class CirclesFrame extends Frame
{   
	static CirclesPanel dc=new CirclesPanel();
	CirclesFrame(String str)
	{
		super(str);
	}
	public void go()
	{
		duckAdapterTest tat=new duckAdapterTest();
		addWindowListener(tat);
		setSize(400,400);
		show();
	}

}

class duckAdapterTest extends WindowAdapter
{
	public void windowClosing(WindowEvent e)
	{
		System.exit(1);
	}
}