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

/* Class that will create a Drawing (using the class Drawing),
 * add it to a pane, and show all in a frame.
 */
class DrawingInWindow{

  public static void main(String[] args){

    JFrame frame = new JFrame("My shapes on screen");
    Container pane = frame.getContentPane();

    pane.add(new Drawing());
    frame.pack();
    frame.show();

  }
}