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The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.　　一个偶然的机会，布罗根找到了杰西并在杰西居住的小岛上和杰西相爱了。就在两个人过着世外桃源般的幸福爱情生活时，球队原主教练萨利找到了他们。身为朋友但不明真相的萨利本想好好教训一番布罗根并劝他返回球队参加比赛，谁知杰西却失手开枪将萨利打死。萨利死后，杰西当时就跑了，等布罗根处理完萨利的尸体回到城里找到杰克时，让布罗根意想不到的是，杰西居然出现在杰克的身边，而且杰克已经知道发生在丛林小岛上的一切事情……该剧讲述了一位少女漫画家为了突破创作瓶颈，主动接近高冷教授来获取创作素材，最终收获命定爱情的故事。现在云青山提出了和他们之间有联系。说着，就跪下了，禁不住滴下泪来。