java - 是否在任何地方指定匿名类的数量从 1 开始？

Question

This answer另一个问题表明，作为通过反射查找匿名类的解决方法，只需尝试所有名称，从 ...$1 开始并向上计数，直到找不到更多名称。这是否保证找到所有内部类，或者是否存在它们从 0 开始或某些数字被遗漏(无论出于何种原因)的情况？

Answer 1

JLS 13.1指定:

The class or interface must be named by its binary name, which must meet the following constraints:

• The binary name of a top level type (§7.6) is its canonical name (§6.7).
• [...]
• The binary name of an anonymous class (§15.9.5) consists of the binary name of its immediately enclosing type, followed by $, followed by a non-empty sequence of digits.

所以从理论上讲，它不必从 1 开始，但它必须类似于 EnclosingClass$N，其中 N 是一个数字。