public class Point2DDemo {
public static void main(String[] args) {
onlyfun.caterpillar.Point2D p1 = new
onlyfun.caterpillar.Point2D(10, 20);
System.out.printf("p1: (x, y) = (%d, %d)%n",
p1.getX(), p1.getY());
}
}