Java继承 - 实例变量重写 [英] Java Inheritance - instance variables overriding

问题描述

为什么在继承中不覆盖超类的实例变量？

Why are Instance variables of a superclass not overidden in Inheritance ?

推荐答案

因为继承旨在修改行为。行为是通过方法公开的，这就是为什么可以覆盖它们。

Because inheritance is intended to modify behaviour. Behaviour is exposed through methods, and that's why they can be overridden.

字段不是行为而是状态。您不需要修改它，也不需要修改超类使用的私有方法。它们旨在允许超类做它的工作。

Fields are not behaviour but state. You don't need to modify that, nor the private methods employed by the superclass. They are intended to allow the superclass to do it's job.

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