java - null 是 Java 关键字吗？

Question

null是Java中的关键字吗？

Answer 1

不符合Java Language Specification list of keywords .另一方面， 这不编译:

int null = 10;

rules for identifiers指定:

An identifier is an unlimited-length sequence of Java letters and Java digits, the first of which must be a Java letter. An identifier cannot have the same spelling (Unicode character sequence) as a keyword (§3.9), boolean literal (§3.10.3), or the null literal (§3.10.7).

老实说，我不确定将其设为非关键字有什么好处。