支持导入常量：这个特性使静态方法和字段能够被导入，这样在访问静态成员时就不必使用完全限定的类名。

Support for importing constants: This facility allows static methods and fields to be imported, avoiding the need to use fully qualified class names when accessing static members.

youdao

常量—终态静态字段和临时终态本地变量—全部适用大写字母，并以下划线分隔各词，如MAX_CONNECTIONS。

Constants - final static fields and occasionally final local variables - are written in all uppercase with underscores separating the words, as in MAX_CONNECTIONS.

youdao

以前讲过，常量池中对类型、字段和方法的引用在开始时都是符号。

As mentioned earlier, references to types, fields, and methods in the constant pool are initially symbolic.

youdao