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The third adapter mode is the adapter mode of the interface, 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:This is the case with my neighbor Aunt Wang. Because her family's financial conditions are not very good, she especially likes to toss and turn when buying vegetables. She goes to the New Century Supermarket at the gate of the community and has a look: "Lettuce costs 3.5 yuan per catty, which is too expensive." Therefore, she took a six-stop bus to Wal-Mart, "more expensive, four dollars a kilo." Therefore, she took another seven stops to Yonghui. "Three dollars a kilo is great." She bought 5 kg and went home happily. After tossing and turning for half a day, I deducted the fare and lost 50 cents.而且更加可贵的是，高产的背后并没有牺牲质量，天启的每一部小说都能带给大家前所未有的震撼。来人正是番邑县令吴芮，看着爱儿项上的明晃晃的剑刃，吴芮已然明白发生了什么。张槐听了也不在意，跟孙铁等人喝了一杯酒，便带着板栗去了严师傅他们家。