package com.pattern.PrototypePattern.materials.po; /** * 正方形 * * @author lx * @date 2021/11/24 14:47 **/ public class Square extends Shape { private Integer a; private Integer b; public Integer getA() { return a; } public void setA(Integer a) { this.a = a; } public Integer getB() { return b; } public void setB(Integer b) { this.b = b; } }