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1.1 Direct AttacksIn fact, each design pattern is a very important idea, which looks very familiar. In fact, it is because what we have learned is involved. Although sometimes we don't know it, it is actually reflected everywhere in Java's own design, such as AWT, JDBC, collection class, IO pipeline or Web framework, in which design patterns are everywhere. Because of our limited space, it is difficult to talk about every design pattern in great detail, but I will try my best to write down the meaning clearly in the limited space and space so as to make everyone understand better. If there is no accident in this chapter, it should be the last talk of the design pattern. First of all, it should be the figure at the beginning of the previous article:However, for large-scale project development or framework design, it is obviously better to organize code with design patterns.辽沈战役酣战之际的年10月，国民党反动派对我解放区石家庄实施了一次代号“穿心行动”的奇袭计划，妄图一举击毁我党中央“心脏”西柏坡。刚刚解放一周年的新城市石家庄城内，一场波谲云诡的生死对决就此展开。Return null;Ah Qi's husband was finally fined a one-year commission (about 500,000 to 2 million), "which is a lesson." However, his classmates, who were vice-presidents in the investment and financing family, were directly arrested.Single panel and double panel; Split board, whole board; Gold plated plate, lead tin plate.