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Private State state;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.心仅仅是相隔一道墙，两个人的距离却是那么的遥远。这就是现代都市的生活方式给人与人之间设下的圈套。所以，他跟她能够荒诞离奇地相识、到嘻笑怒骂地相知、最后你情我愿地相爱，这是多么美丽的一件事情。年纪轻轻的陆飞已然是一家网络游戏公司的设计师，典型的都市白领。在租住的大楼里来去匆匆，空姐装束的冉静引起了陆飞的注意，但一直苦于没法和她认识。有天晚上，陆飞加班到很晚，回到自己住所小区的时候，"捡到"了这位漂亮的空姐。冉静喝醉了，倒在小区花园的长椅上呼呼大睡。陆飞担心冉静的安全，把醉得一塌糊涂的冉静带回了自己家里。翌日，冉静醒来的时候发现自己躺在一张陌生的床上，而且自己身上的衣服也被换了，心急火燎的她不问青红皂白，对陆飞一阵劈头盖脸的殴打及诘问。最终，误会解除了，冉静心里对陆飞却有了一个印象：他是个好人。冉静租住的老房东要把房子卖掉，冉静一下子找不到房子。无奈之下，将自己的东西逐渐搬进了楼下陆飞的家，说是暂时借地方放一放，谁知最后竟被房东逼得"住"进了陆飞家里，和空姐"同居"的日子开始了。在同居的日子　　现实和梦想永远在拔河，张宁看着队员因为各种问题，一个个的离开团队，张宁萌生了放弃的念头，幸得于杰鼓励，重拾斗志…陈启相信，这两部电影出来后，启明影视必将真正立足电影市场。Another parent said that when his child was three or four years old, he found that his child had inattention and other phenomena, but he did not know how to solve them at that time, thus seriously affecting his child's academic performance after going to school. "The children have also developed a rebellious attitude towards our discipline and have gradually become naughty children in the class. We are especially anxious and have been recommended to enroll in the thinking ability training course."The general JS code is as follows: