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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.1, poor wear resistance, easy pilling.Unicom该剧讲述的是一个发生在古老图书馆里的故事，六个性格迥异的工作人员遇到了许多离奇事件，展开了一场前所未见的神奇冒险，碰撞出应接不暇的密集笑点，让你猜中了开头，却猜不中结尾。Symantec Protection Engine 7. X for Windows (64-bit)事实上，如果小龙女真得那般冰冷，书友们只会直接弃书，而非上网调侃。Qinglan looked everywhere for health and apologized to him, but told her calmly and healthily to talk about them after Yishang's wedding. Youmei begged Hyun Cha to let Yeon-hee leave Sanwarm. Hyun Cha looked at Yeon-hee and could not bear to say it. The whole family was going to attend Yishang's wedding, but Koko said he would not attend. Yishang and Yu Ying quarreled over their children on the first night of their wedding.