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In this example of abstract factory, there are two specific tables (user and dept) and two processing methods (SQL and access). According to the processing method, it is divided into two factories. Each factory has two abstract table processing, and each table processing is an abstract.The losers of team a and team b and team c after the break of the match东瓯和闽越之战才是越国目前的当务之急。One of them taught me to be a gentle woman.宋暖和周格格是上海名牌高校的应届毕业生，没有背景，属于工薪二代，梦想就是找到一个好工作，觅得一个好老公。在屡屡碰壁的求职过程中，一个寝室的她们又同时被一家大型的民营企业录取为实习生。故事由此开始，在实习过程中，为了能得到这份工作，两人在各自的部门充分领略到职场上复杂的人际关系，尝到了许多的酸甜苦辣。有强烈自尊的宋暖遭遇富二代的猛烈攻势，一心想嫁入豪门的周格格遭遇凤凰男。她们的工作最后能顺利确定吗？爱情又会遭遇什么样的阻碍？Javascript neither supports abstract classes nor has the concept of interfaces. Therefore, be very careful when using the state mode. If you forget to implement the buttonWasPressed method for a state subclass when writing a state subclass, an exception will be thrown when the state switches. Because Context always delegates requests to the buttonWasPressed method of the state object. Therefore, let the abstract method of the abstract parent class throw an exception directly, which will be found at least during the program run.130-150