Java – is there any way to default language by country / region on locale?

I have these lines of code:

Locale[] cosas = Locale.getAvailableLocales();

for (int i = 0; i < cosas.length; i++) {
    log.info(cosas[i]);
}

I got this list:

ms_MY
ar_QA
is_IS
fi_FI
pl
en_MT
it_CH
nl_BE
ar_SA
ar_IQ
es_PR
es_CL
fi
de_AT
da
en_GB
es_PA
sr
ar_YE
mk_MK
mk
en_CA
vi_VN
nl_NL
es_US
zh_CN
es_HN
en_US
fr
th
ar
ar_MA
lv
de
in_ID
hr
en_ZA
ko_KR
ar_TN
in
ja
sr_RS
be_BY
zh_TW
ar_SD
pt
is
ja_JP_JP_#u-ca-japanese
es_BO
ar_DZ
ms
es_AR
ar_AE
fr_CA
sl
es
lt_LT
sr_ME_#Latn
ar_SY
ru_RU
fr_BE
es_ES
bg
iw_IL
sv
en
iw
da_DK
es_CR
zh_HK
zh
ca_ES
th_TH
uk_UA
es_DO
es_VE
pl_PL
ar_LY
ar_JO
it
uk
hu_HU
ga
es_GT
es_PY
bg_BG
hr_HR
sr_BA_#Latn
ro_RO
fr_LU
no
lt
en_SG
es_EC
sr_BA
es_NI
sk
ru
mt
es_SV
nl
hi_IN
et
el_GR
sl_SI
it_IT
ja_JP
de_LU
fr_CH
mt_MT
ar_BH
sq
vi
sr_ME
pt_BR
no_NO
el
de_CH
zh_SG
ar_KW
ar_EG
ga_IE
es_PE
cs_CZ
tr_TR
cs
es_UY
en_IE
en_IN
ar_OM
sr_CS
ca
be
sr__#Latn
ko
sq_AL
pt_PT
lv_LV
sr_RS_#Latn
sk_SK
es_MX
en_AU
no_NO_NY
en_NZ
sv_SE
ro
ar_LB
de_DE
th_TH_TH_#u-nu-thai
tr
es_CO
en_PH
et_EE
el_CY
hu
fr_FR

For example, for Spanish as a country, the list contains two locales: es_ Es and Ca_ Es, of course, this is different from Spanish

So, my question is, how do I know which language a country defaults to? The language environment can be constructed only by language, but I need to pass the country through the parameters of this method. Now I have this code to allocate the language by default:

if (language.equals("")) {
    switch (country) {
        case "CN":
            language = "zh";
            break;
        case "ES":
            language = "es";
            break;
        case "US":
            language = "en";
            break;
        case "JP":
            language = "ja";
            break;
        default:
            country = "";
            break;
        }
    }

if (language.equals("") && country.equals("")) {
    newLocale = new Locale("es","ES");
} else {
    newLocale = new Locale(language,country);
}

RESOURCE_BUNDLE = ResourceBundle.getBundle(BUNDLE_NAME,newLocale);

But I need to extend this switch for more languages Therefore, I prefer to assign a language to a country by default

I found a solution on link, but I tried it and it was wrong (for example, for Spain, it returned the default CA es, but it was not) Does anyone think it's really possible to get countries through code? Any ideas? Thank you.

Solution

Must it be Java? I created a small exe in C that you might find useful: kyaalocale. You can customize it as needed and add more if / then / else or anything you need