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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.他是老儿子，如今还跟着爹娘住一块，因此郑氏张槐晚上活动他都知道，他也会的。《逆光青春》描述六个背景不同,个性迥异的年轻人,在追寻梦想的旅途中相遇相知发生的故事。看角色在逆光中朝梦想前进的执著与彷徨,与他们一同在现实社会中感受温情,体验百态,经历欢喜,也可能遇到悲伤与挫折的其中滋味,继而让人沉淀,萌生希望,涌起再次出发的动力。面对毕业与离别前夕的淡淡哀愁,五人大声宣告自己的梦想,并相约在预言家预测世界末日来临的那一天见面。The solution is to move the cursor to the end of the article, then click "Page Layout"-Page Setup-Separator-Continuous "and confirm./surprised