You can use arithmetic operators within your constant declarations as long as there are no mixed type expressions.

只要没有混合的类型表达式，就可以在常数说明中使用算术运算符。

youdao

In addition, an interface can contain constant declarations.

另外，接口可以包含常量声明。

youdao

In addition, an interface can contain constant declarations.

另外，接口可以包含常量声明。

youdao