Is there Simple way to use String.toLowerCase() for 9 kinds of languages?

Question

I need to treat 9 kinds of language in a list below.

• Dutch
• English
• French
• German
• Italian
• Portuguese
• Russian
• Spanish
• Ukrainian

For words in these languages I need to use tolowercase(). and I know I need to use Locale(country, language) as a parameter of the function. Then, do I have to use specific locale for each language, or is there simpler way to do this?

Answer 1

You can construct a Locale from an ISO 639 language code:

Locale russian = new Locale("RU");

There are nice default locales for you to use, for example:

Locale english = Locale.ENGLISH;
Locale french = Locale.FRENCH;
Locale german = Locale.GERMAN;
Locale italian = Locale.ITALIAN;

Then just use String#toLowerCase() with the locale:

String lower = str.toLowerCase(someLocale);