如何使用超级超类的方法 [英] how to use the method of a super super class

问题描述

在Java中，我遇到一种情况:我写了3个类A，B，C，类B扩展了类A，而类C扩展了类B.
类A中有一个方法X()，然后我在类B中重写并再次在类C中重写.
现在声明一个类型为C的变量M.如何调用M.X()，其中X()属于类A.

确实需要帮助:)

我在Java中使用JDK 1.6.0

In java, I have a situation : I wrote 3 classes A, B, C, class B extends class A and class C extends class B.
There is a method X() in class A, then I override in class B and override in class C, again.
Now declare a variable M type C. How could I call M.X() in which X() is belonged to class A.

Really need help :)

I code in java, using JDK 1.6.0

推荐答案

编写代码，我认为您无法做到这一点.您可以将X()声明为抽象，然后让每个子类都实现它.

I don''t think you can do this. You could declare X() as abstract and just let each subclass implement it.

您不能，请参见此处[

You can''t, see here [^] (the competitors...) for a rationale.
:)

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