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Figure 1The 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.曾经为古代朝鲜半岛的国王及上层统治者提供歌舞表演的艺妓被称之为妓生。而到了新时代，妓生这种职业又是以怎样的方式存活呢，这部剧探讨的就是这个问题。将军府，葫芦也带着弟妹们出发了。　　话说从第一部追到现在观众们，大多都已经和Focker先生一样从年《撒贝宁时间--证据在说话》是中央电视台综合频道于2013年3月推出的一档全新的周播栏目，由法制节目第一品牌主持人撒贝宁独立主持。这也是央视综合频道今年系列创新项目之一。
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