推理方法的最终结果 [英] Reasoning for making a method final

问题描述

对不起，在这里快速提问，只是在我的笔记中找到了一些关于最终制作方法的内容。我的笔记声称你应该为这个方法做一个最后的方法：

Sorry, quick question here, just found something in my notes I don't understand in relation to making a method final. My notes claim you should make a method final for this reason :

使得无法强制执行不变量。

Makes it impossible to enforce invariants.

字符串应该表现为字符串。

A String should behave as a String.

我真的不明白这是什么意思。有人可以帮我分手吗？非常感谢。

I don't really understand what is meant by this. Can someone please break it down for me ? Thanks a lot.

推荐答案

我猜应该说可以强制执行不变量。基本上，如果有人可以覆盖一个方法，那么他们可以改变影响你的类不变量的行为。

I would guess that should have said "Make it possible to enforce invariants". Basically, if someone can override a method, then they can change behaviors affecting your class's invariants.

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