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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.张槐便说，他们有可能被流放，也有可能判徒刑，说不定会被卖给人当奴仆，又解释了流放可能干些啥事，受哪些折磨等等。　　“没有名字的我，没有未来的她”3. Enter the MindManager Mind Map Software Installation Type interface. In the interface, there are two installation types, oil standard and custom. We can select according to our own needs and click next at the bottom of the interface.HKLMSYSTEMCurrentControlSetServicesTcpipParametersHenan Province我们两家，再加上李家，那院子里笑闹声都没个歇的，要等你们睡着了才没声音了……正说着，前面的香荽就停下脚步，转头幽怨地叫道：娘。