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王尚书接过状子，越看越心惊：张家和郑家这是要彻底收拾童侍郎，为新回归的儿子出气了。韩信道：原来如此，臣一直在担心荥阳那边的情况。"It can also be said that, but the premise is that there are only big wasps, but there are not only big wasps, so things are not so simple. If it were just big wasps, it would not be like what it was later." Zhang Xiaobo said.劲风向着峡谷灌进，偶尔的狭管效应还发出呜呜的风吼声。& g, O0 M0 v9 M1 f. H # y! F: kThe 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.林虎狠狠的拍了一下桌子。