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The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.但总是比现在的情况要好的多，没有太多自主权，完全是任人摆布的墙头草，真是无奈啊。1. Comparison of Poisonous Rocket Damage三个暴窃贼阴差阳错遇上警队，更错乱辗毙一警。为求脱身，三人走入一酒吧，却发现店内其一人质竟就是警方原要追捕的重犯。此时警方已把酒吧重重包围，决定进行强攻……优酷电影土豆电影联合万合天宜共同打造的《报告老板!》是2013第一神剧《万万没想到》的原班人马倾情打造,每周四更新,由叫兽易小星监制,子墨导演,白客,小爱,子墨和本煜主演.本剧首度将目光聚焦"电影职场",立志投身电影事业的主角们为了满足客户千奇百怪的需求,凭借自身对电影情节的独特理解和奇葩思维调戏烂片,重解经典.在他们的"全新"作品中,主角不再是高大而不可侵犯的"神"之人物,而被打造成为了会调侃人性和充满独特生活趣味的"普通"人。《绿皮书》该片改编自真人真事，讲述了意裔美国人保镖托尼，他被聘用为世界上优秀的爵士钢琴家唐开车。钢琴家将从纽约开始举办巡回演奏，俩人之间一段跨越种族、阶级的友谊的故事。该剧讲述了一个拥有三个不同姓氏的充满矛盾的平凡家庭的故事。