第四色

接着又补充道：也对不起你。U.S. 381.5 million 1.9 million他的才学也不用我说了，为人最是疏狂，行为拓落不羁。章邯要是有所动作，董翳和司马欣会作何反应？他们能否和章邯一条心也很是难说？毕竟随着地位的改变，人的心态也会发生巨大的变化，董翳和司马欣必须考虑自身的利益和封国的利益。周姑娘得意间，感觉还是很灵敏的，脑后长眼睛般。Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.