The Java Developers Almanac 1.4

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e335. Listing All Available Locales

    Locale[] locales = Locale.getAvailableLocales();
    
    for (int i=0; i<locales.length; i++) {
        // Get the 2-letter language code
        String language = locales[i].getLanguage();
    
        // Get the 2-letter country code; may be equal to ""
        String country = locales[i].getCountry();
    
        // Get localized name suitable for display to the user
        String locName = locales[i].getDisplayName();
    }

Here's a sample of output using a default locale of Locale.ENGLISH:

    Language Code, Country Code, Localized Name
    ar, , Arabic
    ar, AE, Arabic (United Arab Emirates)
    ar, BH, Arabic (Bahrain)
    ar, DZ, Arabic (Algeria)
    ar, EG, Arabic (Egypt)
    ar, IQ, Arabic (Iraq)
    ar, JO, Arabic (Jordan)
    ar, KW, Arabic (Kuwait)
    ar, LB, Arabic (Lebanon)

Here's a sample of output using a default locale of Locale.FRENCH:

    Language Code, Country Code, Localized Name
    ar, , arabe
    ar, AE, arabe (Emirats Arabes Unis)
    ar, EG, arabe (Egypte)
    ar, IQ, arabe (Irak)
    ar, JO, arabe (Jordanie)
    ar, KW, arabe (Koweit)
    ar, LB, arabe (Liban)