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The adapter for the interface is as follows: Sometimes we write an interface with multiple abstract methods, When we write the implementation class for the interface, All methods of the interface must be implemented, This is obviously wasteful at times, Because not all methods are what we need, Sometimes only a few are needed, In order to solve this problem here, we have introduced the adapter mode of the interface. With the help of an abstract class, the abstract class implements the interface and all methods. However, we do not deal with the original interface, but only get in touch with the abstract class, so we write a class, inherit the abstract class and rewrite the methods we need. Take a look at the class diagram:　　黑龙江省边境小镇黑河，在时任警备司令的马占山治理下，百姓安居乐业，却不料日军悍然发动“九一八事变”。马占山临危受命，被任命为黑省代主席，总揽军政。Detective Inspector Mike Shepherd, is good at his job but bad at making labor relations, when it comes to the city of "Brokenwood" to solve a crime falls in love with him and decides to stay, but soon Shepherd begins to collide with Kristin detective Sims.怕是还要一个多月哩。就是锦鲤，这娃儿怕是想不开……泥鳅奶奶听了就抹眼泪。波特兰警局警察Nick Burkhardt（大卫·君图力 David Giuntoli 饰）刚刚被 晋升为命案侦探，正准备在新的工作岗位上大展拳脚，可是他开始见到一些根本不能用言语来解释的可怕景象。Nick的姑姑Marie向Nick透露了一个惊天秘密，Nick的生活从此改变。Marie称Burkhardt家族的祖先曾隶属于一个猎人集团，他们的统一代号为“格林”。这个世界中存在大量的超自然生物，它们试图侵占世界、毁灭人类，而“格林”的任务就是阻止它们的阴谋。当Nick对家族背景有了更多了解后，越来越意识到自己对“格林”的义务责无旁贷。