ecb-rate-client

This library is a simple wrapper around the Daily exchange rate xml publish by the European Central Bank.

It provides a simple features to get the rate between two currencies as long as they are listed in the aforementioned xml.

Sample usage

Getting the value of 1 EUR in USD

In this case, the library simply parse the corresponding rate in the ECB xml

FxQuoteRequest fxQuoteRequest = FxQuoteRequest.builder().baseCurrency(Currency.getInstance("EUR"))
        .quoteCurrency(Currency.getInstance("USD")).build();

EcbRateClient ecbRateClient = EcbRateClient.getInstance();

try {
    FxQuote quote = ecbRateClient.getQuote(fxQuoteRequest);
    System.out.println("On " + quote.getQuoteDate().format(DateTimeFormatter.ISO_DATE) + " 1 " +
            fxQuoteRequest.getBaseCurrency().getDisplayName() + " was worth " + quote.getRate() + " " +
            fxQuoteRequest.getQuoteCurrency().getDisplayName());

} catch (UnsupportedCurrencyException e) {
    e.printStackTrace();
}

Getting the value of 1 USD in EUR

In this case, the library takes the multiplicative inverse of the EUR/USD rate from the ECB xml

FxQuoteRequest fxQuoteRequest = FxQuoteRequest.builder().baseCurrency(Currency.getInstance("USD"))
        .quoteCurrency(Currency.getInstance("EUR")).build();

EcbRateClient ecbRateClient = EcbRateClient.getInstance();

try {
    FxQuote quote = ecbRateClient.getQuote(fxQuoteRequest);
    System.out.println("On " + quote.getQuoteDate().format(DateTimeFormatter.ISO_DATE) + " 1 " +
            fxQuoteRequest.getBaseCurrency().getDisplayName() + " was worth " + quote.getRate() + " " +
            fxQuoteRequest.getQuoteCurrency().getDisplayName());

} catch (UnsupportedCurrencyException e) {
    e.printStackTrace();
}

Getting the value of 1 CHF in USD

In this case, the libray gets the EUR/CHF and EUR/USD rate and divide the EUR/USD rate by the EUR/CHF rate.

FxQuoteRequest fxQuoteRequest = FxQuoteRequest.builder().baseCurrency(Currency.getInstance("CHF"))
        .quoteCurrency(Currency.getInstance("USD")).build();

EcbRateClient ecbRateClient = EcbRateClient.getInstance();

try {
    FxQuote quote = ecbRateClient.getQuote(fxQuoteRequest);
    System.out.println("On " + quote.getQuoteDate().format(DateTimeFormatter.ISO_DATE) + " 1 " +
            fxQuoteRequest.getBaseCurrency().getDisplayName() + " was worth " + quote.getRate() + " " +
            fxQuoteRequest.getQuoteCurrency().getDisplayName());

} catch (UnsupportedCurrencyException e) {
    e.printStackTrace();
}

Exception

The library will throw a UnsupportedCurrencyException if one of the currency in the currency is pair is not EUR and not listed in the ECB xml (for instance XPF is one of those currency at the time of writing )