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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.Independent Attack +20我自己还忙不过来哩，谁管你的事？你给我早些滚回来……葫芦早已经松开他俩的手，飞身跃上马背，决然催马离去。Event handlers refer to methods that are called when certain events occur in HTML. The term "triggered" (or "fired") by an event is often used.在Nikita决心与组织对抗的时候，她遇到了一个吸毒的小女孩，并改变了小女孩的命运。