public static void main(String[] args) {
Sharp cycle = new Cycle();
Sharp rectangle = new Rectangle();
System.out.println("圆形面积为："+cycle.getArea(2,2)+"，周长为："+cycle.getPremeter(2,2));
System.out.println("长方形面积为："+rectangle.getArea(2, 2)+"，周长为："+rectangle.getPremeter(2, 2));
}
