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The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit./spoon (hug)俞大猷再是一回手甩枪，一具被捅穿的尸体就此砸落在地，再没了气息。该剧会令大家感动，并会给大家带来欢乐，这部电视剧不仅充满乐趣，也会让观众皱紧眉头，最后会在显像管面前，赶走所有的观众。讲述了韩国广播80年来，不平凡的经历，作为特辑剧，以6个短篇集的形式制作，也是确认《我们幸福的几个质疑》的朦胧本质的良好契机。平安是某知名购物城内美食街所聘请的员工，个性热情率真的她，一直暗恋着阳光型男企画课经理子文，阴错阳差的机会下却碰上了刚出狱的冷面犀利哥叶晨，自认倒楣且厄运连连的她还因此赶上了购物城总裁白明俐的绑架案，连自己也身陷爆炸的危险之中。故事由热爱棒球本田吾郎5岁时开始说起，失去母亲的吾郎一心想成为和爸爸一样优秀职棒选手，每天和父亲两人早晚都很努力地练习锻炼体力。失去母爱的吾郎，很喜欢幼稚园的桃子老师，把她当作亲生母亲般仰慕。此外，还有吾郎第一个陪他伴他打棒球的伙伴-佐藤寿也，和一群共同加入棒球行列的好友们相逢，而一连串充满勇气、斗志、亲情、友情的温情感人又热血激励人心的热血动人棒球故事，就这么开始了……政阳与尚菲终于步入红毯结婚，爱情公寓是17连的居住地，有许多一起创造的回忆、故事，究竟17连还有什么精彩难忘的回忆及还会遇到什么样的困难要解决呢……