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Console.WriteLine (sender);One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.称为中国第一部少年犯罪题材电视剧的《拯救少年犯》，选取的十个少年犯故事是从上千个真实案例中精选出来的，剧中很多阳光般的花季少年，最后却走上了犯罪的道路，令人深思和感慨。其包括：卷宗一持刀杀人；卷宗二过失杀人；卷宗三投毒杀人；卷宗四报复杀人；卷宗五勒索杀人；卷宗六持枪杀人；卷宗七杀人毁尸；卷宗八过失杀人；卷宗九过失杀人。…11世纪的东欧，整个欧洲正处于北欧维京人肆虐的时代。无尽的村庄、城市被灭绝，而身为主角的一群年轻杰出的勇士发下誓言维护正义，他们到处打击维京人。本片通过大量的打斗、古装战争场面的描述，再现了史诗般恢弘的战役，让观众牢牢记住曾经的英雄。Simplified Book ID: @ I don't have three hearts主演阵容进行了大变动，崔英真（金喜爱 饰）因个人原因停职.加上云州城就在附近，忙碌之余还能抽空进城去逛逛，日子新鲜而充实。