如果您有ISO国家代码`US`，`FR`，您如何获得Locale代码（`Locale.US`，`Locale.FRANCE`）？ [英] If you have the ISO country code `US`, `FR`, how do you get the Locale code (`Locale.US`, `Locale.FRANCE`)?

问题描述

如果您的国家代码美国， FR （ISO-3166-1 alpha-2国家/地区代码） ，如何获得Locale代码（ Locale.US ， Locale.FRANCE ）来执行以下操作：

If you have the country code US, FR (ISO-3166-1 alpha-2 country code), how do you get the Locale code (Locale.US, Locale.FRANCE) to do something like this:

System.out.println(DecimalFormat.getCurrencyInstance(Locale.US).format(12.34));
System.out.println(DecimalFormat.getCurrencyInstance(Locale.FRANCE).format(12.34));

$12.34
12,34 €

推荐答案

你不能，因为Locale用于保存语言，而不是国家。它可以为特定国家/地区以及该国家/地区的特定变体提供语言，但它首先是语言。语言和国家之间没有一对一的关系。大多数语言在不同国家/地区使用，许多国家/地区都使用多种语言。

You can't, because a Locale is used to hold a language, not a country. It can hold a language for a specific country, and for a specific variant in this country, but it's a language first. And there is no one-to-one relationship between a language and a country. Most languages are spoken in various countries, and many countries have several languages.

如果您拥有某种语言的国家/地区代码，则可以使用 new区域设置（代码）。但是使用国家/地区代码，您只需调用 getAvailableLocales ，循环搜索结果，找到包含您的国家/地区代码的结果。但可能有几个。

If you had the country code for a language, you could use new Locale(code). But with a country code, all you can do is call getAvailableLocales, loop through the results, and find one which has your country code. But there might be several ones.

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