在java中覆盖静态的替代方法 [英] Alternative to overiding static in java

问题描述

我想知道:将属性拟合到属于大型继承结构的类的最佳方法是什么.我想创建一个抽象的静态方法，每个类都会覆盖该方法，但是经过一个似乎不起作用的快速谷歌.有什么建议?

我可以把它变成一个实例方法，但它确实是一个类级别的规范.

提前致谢.

解决方案

我建议你创建一个抽象方法，就像你想到的那样，让这个方法在每个类的静态变量中实现.

>

抽象类 Base {抽象字符串 getValue();}A 类扩展 Base {静态字符串 aValue = "来自 A";字符串 getValue() {返回一个值；}}B 类扩展 A {静态字符串 bValue = "来自 B";字符串 getValue() {返回 b 值；}}

它需要在每个类中多一点样板，而不仅仅是一个字段声明，但我相信很难做任何事情.

I was wondering: what would be the best way to fit an attribute to a class which is part of a large inheritance structure. I wanted to make an abstract static method which each class would override but after a quick google that doesn't seem to work. Any suggestions?

I could make it an instance method but it really is a class level specification.

Thanks in advance.

解决方案

I would suggest you create an abstract method, just as you have thought of, and let this method be implemented in terms of static variables in each class.

abstract class Base {
    abstract String getValue();
}

class A extends Base {

    static String aValue = "From A";

    String getValue() {
        return aValue;
    }
}

class B extends A {

    static String bValue = "From B";

    String getValue() {
        return bValue;
    }
}

It requires a little bit more boiler plate in each class, than just a field declaration, but I believe it is hard to do anything about that.

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