Java code to convert country codes alpha-2 (IN) to alpha 3 (IND)

Question

Using Java, Is there a quick way to convert an alpha-2 country code (IN or GB) to the alpha-3 equivalent (IND or GBR)?

I can get the alpha-2 codes with:

String[] codes = java.util.Locale.getISOLanguages();

That's not a problem, actually my application reads in the alpha-2 code, but I need to output the alpha-3 equivalent .

Is there a similar way like above to get the alpha-3 codes?

Any suggestions?

This code can be used, for conversion vice versa from Alpha-3 into Alpha-2: `Map countryCodeMap = Stream.of(Locale.getAvailableLocales()) .filter(locale -> !locale.getISO3Country().isEmpty()) .collect(Collectors.toMap(Locale::getISO3Country, Locale::getCountry)); countryCodeMap.get("IND")` — Datz, Jul 05 '23 at 10:31

score 20 · Accepted Answer · answered Sep 01 '10 at 10:50

20

This works -

    Locale locale = new Locale("en","IN");
    System.out.println("Country=" + locale.getISO3Country());

Output:

Country=IND

answered Sep 01 '10 at 10:50

Gopi

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This is great, as I can swop in a variable containing the new country code each time, and it will give me back the corresponding 3 char code for every country. Locale locale = new Locale("en",myCode); The language will all be english, but I'm not concerned about language. – Mbg Sep 01 '10 at 11:52

Arne Burmeister · Answer 2 · 2016-03-07T12:22:14.443

13

Yes, simple create a Locale and get if from the locale:

String alpha3Country = new Locale("en", alpha2County).getISO3Country();

BTW: getISOLanguages() returns language codes (lowercase), getISOCountries() return country codes (uppercase)

edited Mar 07 '16 at 12:22

answered Sep 01 '10 at 10:49

Arne Burmeister

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This is great, as I can swop in a variable containing the new country code each time, and it will give me back the corresponding 3 char code for every country. The language will all be english, but I'm not concerned about language. – Mbg Sep 01 '10 at 11:53
On a side note, you can equivalently do `new Locale("", alpha2County).getISO3Country()`. Specifying the English language here is kind of irrelevant. – Jonik Feb 17 '15 at 13:40
Faulty BTW: Country codes are UPPERCASE, language codes lowercase. – JN01 Mar 07 '16 at 10:16

score 4 · Answer 3 · answered Sep 01 '10 at 10:55

Since you read in the codes, you can't hardcode them you rather should create a lookup table to convert into ISO codes.

public static void main(String[] args) {
        // setup
        Locale[] availableLocales = Locale.getAvailableLocales();
        HashMap<String, String> map = new HashMap<String, String>();
        for ( Locale l : availableLocales ) {
            map.put( l.getCountry(), l.getISO3Country() );
        }
        // usage
        System.out.println( map.get( "IN" ) );
        System.out.println( map.get( "GB" ) );
    }

score 1 · Answer 4 · answered Feb 24 '14 at 12:17

1

Gopi's answer works. BUT take note that the returned codes are the ISO 3166 country codes and not the ISO 4217 currency codes. These differ slightly so use with caution

answered Feb 24 '14 at 12:17

Codelicious

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Please, try to read this http://stackoverflow.com/about, to get more understanding about questions/answers here on SO. Your contribution is not answering the question. It is more a comment, which you can add once you'll increase your reputation: http://stackoverflow.com/faq#reputation – Radim Köhler Feb 24 '14 at 12:40

Java code to convert country codes alpha-2 (IN) to alpha 3 (IND)

4 Answers4