フリー問題

問題文

Which expression is the recommended way to obtain a Locale for a language and country pair in Java 21?

選択肢

1. Locale.getDefault with the language code and the country code as its arguments, which returns a locale derived from the one that the platform is currently using.
2. A call to new Locale with those two codes, which the current documentation still recommends while any new code is being written today.
3. Locale.of with the language code and the country code as its arguments, which is the form that replaced the older constructor there.
4. Locale.forLanguageTag with the language code and the country code passed as two separate arguments so the tag is assembled by the library itself, while the tag form takes a single string.