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The code for creating the object is encapsulated and the specific factory class is instantiated, thus achieving the purpose of encapsulation and instantiation. Encapsulating the code that creates the object in one place can also achieve the purpose of reuse and is more convenient for later maintenance. This also means that when the customer instantiates the object, he will only rely on the interface and not on the specific implementation. Help us to better achieve interface programming rather than implementation, making the code more flexible to cope with future extensions.Black Bird -- Aimer3. Inferences should not be made on the basis of insufficient information, in particular insufficient radar observations.　　Syfy宣布剧集《#凡妮莎海辛# Van Helsing》续订第五兼最终季，13集最终季将于明年初开机拍摄，预定同年播出。　　王琦瑶在不同的年龄和时间，和四个男人上演了不同的情感故事。程先生不仅见证了王琦瑶的一生，他本身的人生轨迹和命运沉浮，也和王琦瑶的一生相互映照；两人共同走过了这段千疮百孔的感情，百感交集的岁月……尽管是形势所迫，汉王也没有因此而怪罪。影片讲述了发生在1965年到1973年俄罗斯军事人员在支持越南战争中遇到的事情，保罗是从莫斯科调至越南战场的俄罗斯士兵，在战场中他发现了队伍里出现了叛徒，原本想揭穿阴谋，但保罗自己却陷入了别人设好的圈套。为了证明自己的清白，保罗踏上了一条意想不到的道路