匿名类是内部类的子集吗?
问题描述：
这听起来像是一个愚蠢的问题，但是所有匿名类都必须在现有类中定义和实例化；因此，它们必须同时是内部类.
It might sound like a dumb question, but all anonymous classes must be defined and instantiated within an existing class; therefore, they must be inner classes at the same time.
答
这是真的.您的匿名类不能作为单独的类在其他类之外实现，因为它是匿名的，您甚至无法以任何方式对其进行引用.
This is quite true. Your anonymus class could not be implemented outside of other classes, as a seperate class, because as it is anonymus you would not be even able to refer to it in any way.
其他信息: 来自JLS:匿名类始终是内部类(第8.1.3节)；它永远不会是静态的(第8.1.1节，第8.5.1节).
Additional information: From JLS: An anonymous class is always an inner class (§8.1.3); it is never static (§8.1.1, §8.5.1).