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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.It is actually a waste to throw away plastic packaging as garbage. However, these plastic packages without classification are directly mixed into domestic waste for treatment, which also increases the pressure of subsequent waste treatment.——————求推荐票啊——没有收藏的书友，还请收藏一下。HBO过去直接10集预订以色列背景限定剧《我们的男孩 Our Boys》，由Hagai Levi﹑Joseph Cedar及Tawfik Abu-Wael主创，现定于美国时间8月12日两集首播。 该剧根据真实事件改篇，讲述一件2014年夏季的悲剧事件。当时有三个犹太青少年失踪（在现实中以色列认定是巴勒斯坦武装组织哈马斯所为，激化了以巴关系）；两天后，在耶路撒冷东部的西郊森林里，一名巴勒斯坦青少年的烧焦尸体被发现，这令到以色列辛贝反情报与国内安全局（类似FBI的组织）的探员介入调查，而死者的父母为了寻求正义及安慰，因此开始了漫长﹑痛苦的过程。 在现实，三人失踪18天后尸体被寻获，据报导指他们被绑架后不久即遭枪杀。范依兰对尹旭的感觉未尝不是如此，只怕是彭纛泽的时候便一见钟情了，看来什么时候自己得想办法见见这个尹旭才是。? Generally speaking, the factory mode is suitable: whenever a large number of products need to be created and have a common interface, they can be created through the factory method mode. Of the above three modes, the first cannot create the object correctly if the incoming string is wrong, and the third does not need to instantiate the chemical factory class compared with the second, so in most cases, we will choose the third-static factory method mode. ?当年南公有言：楚虽三户，亡秦必楚，吴先生何不趁势而起呢？一旁的吴臣说道：话是这么说，但你所言若非实情，家父轻易举兵，岂不危险？要知道番邑以北尚有三万秦军。