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The code for creating the object is encapsulated and the specific factory class is instantiated, thus achieving the purpose of encapsulation and instantiation. Encapsulating the code that creates the object in one place can also achieve the purpose of reuse and is more convenient for later maintenance. This also means that when the customer instantiates the object, he will only rely on the interface and not on the specific implementation. Help us to better achieve interface programming rather than implementation, making the code more flexible to cope with future extensions.李敬文愕然，就听泥鳅嗤笑道：找我算账？难不成你打人诬陷还有理了？一边转头对板栗和葫芦低声说了几句。　　“《Claws》既疯狂又搞笑，我们已经等不及看到观众们完全沉浸在那个世界当中了。”TNT原创项目部的执行副总裁Sarah Aubrey说，“这是一部讲述女性角色的非常棒的剧集，不论是在台前还是幕后，演员和角色都是难以置信，他们把这部剧出演得极其生动。”The story of entrepreneur Don Cornelius, who developed the Soul Train show, which rose to prominence in the 1970s.那这样First of all, the weakness of the yellow character is related to the meat quality. It cannot be generalized.