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Separate the abstract part from its implementation part so that they can all change independently.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.国际超级大匪徒拉斯泰波波罗斯企图盗取卡尔库鲁斯教授发明的复制机以达到其偷盗国宝的阴谋，不惜绑架了十三岁的尼科兄妹。为了不让坏蛋得逞，丁丁单刀赴会，经过一番争斗，拉斯泰波波罗斯最终落入法网。项梁问道：李由和董翳呢？李由尚未到达雍丘。比跟郑家表姐弟要亲一些。一部以新中国第一支刑侦大队在云南成立并屡破奇案为背景的30集电视剧 。该剧以云南首任公安厅副厅长、党组成员曹显政为原型，采取纪实手法，通过扑朔迷离的案件侦破和对不同矛盾冲突中人物性格的深入刻画，再现中国第一代刑侦工作者、云南“神探”曹显政带领云南公安连续三年创造刑侦破案率99.9%的传奇故事。男主人公曹政，从一个部队“误”入公安的“大外行”，成为一个个大案、疑案的“克星”，他既有“不放过一个真凶，不冤枉一个好人”的责任担当和职业本领，也有不拘一格用人才的胆识和气魄；无论什么样的疑难迷案，只要曹政出马，通过对案情“蚕丝剥茧”般的表象排除，最终总能抓住要害，水落石出，表现了广大公安干警“全心全意为人民服务”的共产党人风采，再现了新中国第一代刑侦工作者的英雄事迹和光辉形象。