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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:催马上前，挡住胡镇看向秦淼的目光，将那顶绿帽往头上一扣。1948年初，青城一名美軍少校被刺殺。南京國防部高官女婿俞北平被任命為特派員，受命調查此案。 同僚鄭翊懷疑其真實身份，并啟動了甄別程序。調查青城美軍少校刺殺案，對俞北平既是機會也是陷阱。他的女兒徐丹妮在青城讀書，思想左傾，處處與父親為難。危機中，俞北平又與前妻之女、美軍中尉林莎相逢。林莎身份神秘，暗中也對俞北平展開追蹤。所謂美軍少校刺殺案，實際是南京極右組織自導自演的一場陰謀，代號“比基尼”，目的要將美軍駐守青城的西太洋艦隊拖進中國內戰。鄭翊和俞北平的較量漸次升級，俞北平一方面要保護兩個女兒，另一方面要完成組織任務。俞北平的親情、友情和家庭，就此捲進了“比基尼”陰謀的漩渦，他的命運究竟會怎樣？OpenDatagramChannel method《政委》剧照