Factory Method Design Pattern工场方法模式

Factory Method Design Pattern工厂方法模式

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}

运行结果：

Motorola produced
Nokia produced

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A?factory method can?be defined as a method in a class that:
(1)Selects an appropriate class from a class hierarchy based on the application context and other influencing factors
(2)Instantiates the selected class and returns it as an instance of the parent class type