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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.　　和晓纬前来垦丁的外国友人原来是有目的而来，在经过热心又友善的亮亮仔细导览之后，竟然论文阐述垦丁国家公园管理上矛盾与紊乱之处，建议将垦丁从国洛蕾塔·塞琪（桑德拉·布洛克饰）是一位才华横溢但与世隔绝的作家。在她的畅销爱情冒险小说里,总会出现许多奇异的地方。而作为本书的封面模特,艾伦（查宁·塔图姆饰）一生都在致力于展现书中英雄角色达什的个人魅力。在与艾伦一起宣传新书时,洛雷塔被一位古怪的亿万富翁（丹尼尔·雷德克里夫饰）绑架。这位亿万富翁坚信,洛蕾塔的新书能带领他找到失落古城中的宝藏。与此同时,艾伦为了证明自己可以成为现实中的英雄,而不仅仅是洛蕾塔虚构的人物,决定前去营救她。这对极不对付的搭档需要共同努力,才能在险恶的丛林中生存下来,并在亿万富翁赶到前找到古老的宝藏。本片讲述的是闻名于世的禅宗大师一行禅师与僧侣和信徒一起，献身于追求正念的艺术的故事。 一行禅师云游世界，为所有人讲述人生和佛教教义，曾获得诺贝尔和平奖提名，曾出版200余本书，在facebook上有150万粉丝，每分钟都有一条他的twitter被转发。The opposite is the product certificate and basic information.