public void executePress(Point p, Drawing dwg) {
   // Get the color we want the ellipse to have from the drawing
   Color c = dwg.getColor();
   // Create the ellipse and store it in the instance variable
   s = new Ellipse(p.x, p.y, 0, 0, c);
   // Store the starting click point oP
   oP = p;
   // Add the ellipse to the drawing
   dwg.add(s);
   // Record history
   dwg.recordHistoryItem(new HistoryAction(s, dwg, false));
 }