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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.留学归来林美雅与欧阳在飞机上因误会而相识，二人也因此展开了一段奇妙的姻缘，林美雅回国原本准备与男友结婚，未曾想迎来的却是男友绝情的背叛，从失恋伤痛中走出来的林美雅决心重新振作，因与欧阳不打不相识，她入职欧阳所在的公司，林美雅用自己的善良、豁达以及在工作上的努力进取很快得到了所有人的认可，并在欧阳事业低谷的时候与之携手共同努力，两人也在朝夕相处之中渐渐产生了超乎友谊的感情。林美雅陪伴欧阳参加一场对于欧麟极其重要的格斗巡回赛事，一路上两人相互扶持相互帮助，共同面对一个又一个挑战，这也使得两颗年轻的心终于走在一起。该节目由郭碧婷与向佐、严屹宽与杜若溪、若风与戚蓝尹展现新婚生活，并由李维嘉、大张伟两位情感观察员陪同三对明星夫妇的家长与明星观察团一同围观自家子女的婚姻生活，了解子女的婚姻相处模式，探寻中国式婚姻的幸福密码。The moonlight slanted into the window and shone straight on the bed, making the darkness even more horrible. Stephen responded, confirmed the environment, and was shocked. He opened the portal and returned to the sanctuary.曹氏听了十分欢喜。