convert iso 4217 numeric currency code to currency name

Question

I have a an ISO 4217 numeric currency code: 840

I want to get the currency name: USD

I am trying to do this:

 Currency curr1 = Currency.getInstance("840");

But I keep getting

java.lang.IllegalArgumentException

how to fix? any ideas?

I can also provide a string: getInstance(String currencyCode) Returns the Currency instance for the given currency code. — Asaf Maoz, Nov 04 '14 at 12:12
If you just want to map code to currency unit, why not using a map? http://en.m.wikipedia.org/wiki/ISO_4217 — Hannes, Nov 04 '14 at 12:51

score 12 · Accepted Answer · answered Nov 04 '14 at 12:15

java.util.Currency.getInstance supports only ISO 4217 currency codes, not currency numbers. However, you can retrieve all currencies using the getAvailableCurrencies method, and then search for the one with code 840 by comparing the result of the getNumericCode method.

Like this:

public static Currency getCurrencyInstance(int numericCode) {
    Set<Currency> currencies = Currency.getAvailableCurrencies();
    for (Currency currency : currencies) {
        if (currency.getNumericCode() == numericCode) {
            return currency;
        }
    }
    throw new IllegalArgumentException("Currency with numeric code "  + numericCode + " not found");
}

score 7 · Answer 2 · edited Oct 10 '19 at 13:38

7

With Java 8:

Optional<Currency> currency = Currency.getAvailableCurrencies().stream().filter(c -> c.getNumericCode() == 840).findAny();

edited Oct 10 '19 at 13:38

Ruben Ernst

335
2
10

answered Jan 08 '19 at 19:23

Jonathan Rosenne

2,159
17
27

score 4 · Answer 3 · edited Nov 15 '19 at 10:46

A better way to do it:

public class CurrencyHelper {

    private static Map<Integer, Currency> currencies = new HashMap<>();

    static {
        Set<Currency> set = Currency.getAvailableCurrencies();
        for (Currency currency : set) {
             currencies.put(currency.getNumericCode(), currency);
        }
    }

    public static Currency getInstance(Integer code) {
        return currencies.get(code);
    }
}

With a little work the cache can be made more efficient. Please take a look at the source code the Currency class for more information.

score 0 · Answer 4 · answered Nov 04 '14 at 12:17

You have to provide code like "USD" and then it will return Currency object. If you are using JDK 7 then you can use following code. JDk 7 has a method getAvailableCurrencies()

public static Currency getCurrencyByCode(int code) {
    for(Currency currency : Currency.getAvailableCurrencies()) {
        if(currency.getNumericCode() == code) {
            return currency;
        }
    }
    throw new IllegalArgumentException("Unkown currency code: " + code);
}

convert iso 4217 numeric currency code to currency name

4 Answers4