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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.Arguments do not automatically reflect changes in function parametersFor example, I invited a sister to a restaurant for dinner, but I didn't know her preferences. In this way, we will take our sister to the hotel and let her order what she likes when ordering. This also realized the factory model, but I don't have to care about what my sister likes to eat, but let her decide what to eat.只是，心中那份担忧和牵挂哪里是说丢就能丢的，于是，只好人前掩饰，背后流泪。⑥ If the connection is long and the interaction between the client and the server is not frequent, then the connection between the client and the server will always be maintained and the corresponding threads will always exist. However, due to infrequent communication, a large number of threads will be vacant for a large amount of time.一个关于友情、爱情，也关于80、90后们的故事。四个爱玩游戏的大学男生以轻松搞笑的风格演绎着一个个令人捧腹的故事，你能在他们的表演中找到自己的影子，或许他们的故事就是你的现实。他们是谁，他们和你一样，是热爱游戏、热爱生活的“好青年”……《我的婆婆怎么那么可爱》（英语：U Motherbaker），2020年台湾家庭喜剧。于2019年6月30日开镜，2020年2月3日杀青。公视主频、公视+与公视台语台将于6月6日播出。