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2. Then, we can see the word "flying" from the figure, which shows that we can fly when trying on this wing. We will take the first wing as an experiment, and the character is in a flying state at this time. On the right side of the picture is what flying movements the wings can make the characters take.陛下。　　电视看点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.蓝猫来不及抗议，其他四猫同时出声，一力撺掇，把这只海外来的猫给卖了。State mode-Allows an object to automatically change its behavior when its internal state changes, and the object looks like it has changed its class. The specific structure diagram is as follows:位于长江和嘉陵江交汇处的地方，有一条古老的嘉陵巷。巷内住着一群欢乐的居民，他们和千千万万的山城普通老百姓一样，在这里休养生息。新世纪的阳光在这里这里折射出斑阑的七彩——他们嬉笑怒骂，说长道短，卿卿我我，恩恩怨怨，天下大事，鸡毛蒜皮，说不清，摆不完的龙门阵……传统与未来在这里冲突，习惯与潮流在这里摩擦……演绎了一幕幕妙趣横生的人间喜剧，真实动情，诙谐幽默。