Java中的等价名称 [英] nameof equivalent in Java

问题描述

C＃6.0引入了 nameof（）运算符，该运算符返回一个字符串，表示放在其中的任何类/函数/方法/局部变量/属性标识符的名称。

C# 6.0 introduced the nameof() operator, that returns a string representing the name of any class / function / method / local-variable / property identifiers put inside it.

如果我有这样的课程：

class MyClass
{
    public SomeOtherClass MyProperty { get; set; }

    public void MyMethod()
    {
        var aLocalVariable = 12;
    }
}

我可以像这样使用运算符：

I can use the operator like this:

//with class name:
var s = nameof(MyClass); // s == "MyClass"

//with properties:
var s = nameof(MyClass.OneProperty); // s == "OneProperty"

//with methods:
var s = nameof(MyClass.MyMethod); // s == "MyMethod"

//with local variables:
var s = nameof(aLocalVariable); // s == "aLocalVariable".

这很有用，因为在编译时检查了正确的字符串。如果我拼错某些属性/方法/变量的名称，编译器将返回错误。此外，如果我重构，所有字符串都会自动更新。有关实际用例，请参阅此文档。

This is useful since the correct string is checked at compile time. If I misspell the name of some property/method/variable the compiler returns an error. Also, if I refactor, all the strings are automatically updated. See for example this documentation for real use cases.

Java中是否有该运算符的等价物？否则，我怎样才能获得相同的结果（或相似）？

Is there any equivalent of that operator in Java? Otherwise, how can I achieve the same result (or similar)?

推荐答案

可悲的是，没有这样的结果。我一直在寻找这个功能，答案似乎是一般来说，这个东西不存在。

Sadly, there is nothing like this. I had been looking for this functionality a while back and the answer seemed to be that generally speaking, this stuff does not exist.

参见获取字段名称

当然，您可以使用命名注释来注释您的字段，从根本上为您自己的类完成此目标。实际上，有各种各样的框架依赖于类似的概念。即便如此，这也不是自动的。

You could, of course, annotate your field with a "Named" annotation to essentially accomplish this goal for your own classes. There's a large variety of frameworks that depend upon similar concepts, actually. Even so, this isn't automatic.

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