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几人沉默了几分钟，这一顿饭也就不欢而散的结束了。The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.さよなら6年2組 中森明菜 小林千登勢当一切的一切已经过去了七十年，当一切繁花似锦已经如尘烟般消散，我们唯一能记得的，就是在那个风雨飘摇战火连连的时代，有着一段凄美动人的爱情故事……并不是所有青春正好的年轻人，都像早上八九点钟的太阳那样能量满满，很多时候，我们都会与下午一点的倦意、迷茫和昏沉苦苦纠缠，下午一点的她，就是真实的展露，即使不是全部，也一定是每个人都有的侧面。Recommendation of Hot Joining Projects: Hu's Large Plate Chicken Joins Big Official Rice Noodles Joins Meimao Maocai Joins Gao Jimi Joins Jin Fuxiang Joins