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清洁工人老杜在工作时捡到了三十万元巨款。他心无杂念，第一时间把钱带回环卫队，联系到失主后交还了三十万元巨款。电视台一名新进女记者前来采访，队里上下对此事都是全力配合，但老杜却拒绝接受记者的采访。当晚播出的电视节目里……The character color is white, the character size is ≥ 1.5 mm, and the character line diameter is not less than 0.2 mm.刘胖子当即站起身，对郑长河道：长河，我晓得郑家如今有钱，看不上刘家的嫁妆。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.This is the classic synchronous blocking I/O mode of one thread per connection.也别想推了黛丝这门亲。2. Import Tools