然后，可以将每个指定的值看作是那个类的一个实例，这为您提供了指定的整数集合所无法提供的编译时类型安全。

You can then treat each named value as an instance of that class, providing you with compile-time type safety that a named set of integers can't.

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如果需要其他的数据类型，比如说整数、浮点数或者布尔值，必须使用相应的包装器类来解析字符串。

If you need another data type such as integer, floating point, or Boolean value, you will have to parse the string using the appropriate wrapper class.

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