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在C/C++中枚举是一种构造数据类型 ,在java中枚举的实质是一个类但是默认是没有构造方法的但是我们可以为其添加构造方法但是必须是私有的 .方法列表要在元素列表之下。其实在 Java类中定义枚举就是定义内部类 . 内部类和外部...

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