实用程序类 - 什么是正确的方法？ [英] Utility Class - What is the correct approach?

问题描述

对于所有具有公共静态的方法的实用程序类，正确的方法是什么。

我应该使用final类还是抽象类？

请给出建议。

例如：

What is the correct approach for a utility class having all methods with public static.
Should I use final class or abstract class?
Please give suggestion.
As for example:

public final class A{ 
    public static void method(){
    }
}

或

public abtstract class A{
    public static void method(){
    }
}

推荐答案

abstract 如果你想要一些由其他类（ override ）实现的类功能，那么你使用abstract。

abstract has its own purpose. If you want some of the class functionality implemented by other classes (override) then you use abstract.

只是实用程序类，但你不想要其他类的子类，然后我会用 final 类。如果实用程序类只有 static 方法，任何方式你不能覆盖它们，因此它们没有区别，它们在非final class also。

If it is just utility class, but you don't want other classes subclass it, then I would go with final class. If utility class has just static methods, any way you can't override them, so it doesn't make difference to have them in non-final class also.

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