最终类中的非最终方法 [英] Non-final methods in a final class

问题描述

我的问题很简单:
编译器是否将最终类中的所有方法都视为最终方法?给final类的方法加上final关键字有什么作用吗?

My question is pretty simple:
Does the compiler treat all the methods in a final class as being final themselves? Does adding the final keyword to methods in a final class has any effect?

我知道 final 方法有更好的内联机会，这就是我问的原因.

I understood that final methods have a better chance of getting inlined and this is why I am asking.

提前致谢.

推荐答案

你说得对，final类中的所有方法都是隐式final的.

You're correct, all methods in a final class are implicitly final.

见这里:

"请注意，您还可以声明整个类 final.声明的 final 不能被子类化.这特别有用，因为例如，在创建像 String 类这样的不可变类时."

"Note that you can also declare an entire class final. A class that is declared final cannot be subclassed. This is particularly useful, for example, when creating an immutable class like the String class."

这里:

final 类中的所有方法都是隐式 final.

All methods in a final class are implicitly final.

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