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

public class DrawingDemo {
	public static void main(String [] args){
		JFrame j=new JFrame(); // The main frame
		j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		j.getContentPane().add(new DrawingPanel(), BorderLayout.CENTER);
		j.setSize(200,200);
		j.setVisible(true);
	}
}