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1. Written examination: (Different companies have different written examination topics).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:17. Code: kiss.To get back to the point, At this time, I saw Zhang Xiaobo's expression was in high spirits. He was obviously very proud and relieved of his hatred for beating up the "killer bee" with the flickering armor-piercing bullet. Associated with his slightly melancholy expression just now, it was obviously not this one that made him melancholy. I was not the kind of person who liked to expose people's scars, but for work reasons, I still had to ask:父母再婚对象的孩子，居然是刚刚分手的前任？！Memory = new Memory ();像淼淼这样，他就不敢胡乱用药了。