关于“类”属性/字段 [英] About the "class" property/field

问题描述

当你这样做时：

MyClass.class.someMethod()

类字段究竟是什么？我在API文档中找不到它。它是一个继承的静态字段吗？

What exactly is the "class" field? I can't find it in the API docs. Is it an inherited static field?

我认为不允许保留关键字作为实体名称。

I thought reserved keywords were not allowed as entity names.

推荐答案

请阅读：

类文字是一个表达式，由类，接口，数组或基本类型的名称组成，或者伪类型void，后跟一个。和令牌类。类文字的类型，C.Class，其中C是类，接口或数组类型的名称，是Class。如果p是基本类型的名称，则让B为拳击转换后的类型p的表达式类型（第5.1.7节）。然后p.class的类型是Class。 void.class的类型是Class。

A class literal is an expression consisting of the name of a class, interface, array, or primitive type, or the pseudo-type void, followed by a `.' and the token class. The type of a class literal, C.Class, where C is the name of a class, interface or array type, is Class. If p is the name of a primitive type, let B be the type of an expression of type p after boxing conversion (§5.1.7). Then the type of p.class is Class. The type of void.class is Class.

http://java.sun.com/docs/books/jls/third_edition/html/expressions.html#15.8.2

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