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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.王尚书等公堂安静下来后，继续审问。所以难免要继续饱受那种骑马的痛苦……不过这一路走来，倒是让尹旭想起一个重要的问题来，那就是马上三宝贝的问题。I. Supported Platforms二人各自喝了一杯，却是谁也没聊生意的事。Action: Kiss others.※各话1周间限定配信