public class PointTest {
  public static void testPoint(Point p) {
          p.move(10, 10);
          p.print();
          System.out.println("<br />");
  }

  public static void main(String args[]) {
    Point       p = new Point(1, 2);
    ColorPoint cp = new ColorPoint(3, 4, "green");
    DeepPoint  dp = new DeepPoint(5, 6, 5);

//    p.move(1, -1);
//    p.print();
//    System.out.println("<br />");

//    cp.move(1, -1);
//    cp.print();
//    System.out.println("<br />");

    testPoint(p);
    testPoint(cp);
    testPoint(dp);
  }
}