1: 2: public class ShapeDemo 3: { 4: public static void main(String[] args) 5: { 6: RectangleInterface box = new Rectangle(5, 8, 4); 7: box.drawHere(); 8: 9: box.set(5, 5); 10: box.setOffset(10); 11: box.drawAt(2); 12: } 13: }