Class Finance

src/main/java/com/github/javafaker/Finance.java:11–173

import java.util.Map;

public class Finance {
    private final Faker faker;

    protected Finance(Faker faker) {
        this.faker = faker;
    }


    private static final Map<String, String> countryCodeToBasicBankAccountNumberPattern =
            createCountryCodeToBasicBankAccountNumberPatternMap();

    public String creditCard(CreditCardType creditCardType) {
        final String key = String.format("finance.credit_card.%s", creditCardType.toString().toLowerCase());
        String value = faker.fakeValuesService().resolve(key, this, faker);
        final String template = faker.numerify(value);

        String[] split = template.replaceAll("[^0-9]", "").split("");
        List<Integer> reversedAsInt = new ArrayList<Integer>();
        for (int i = 0; i < split.length; i++) {
            final String current = split[split.length - 1 - i];
            if (!current.isEmpty()) {
                reversedAsInt.add(Integer.valueOf(current));
            }
        }
        int luhnSum = 0;
        int multiplier = 1;
        for (Integer digit : reversedAsInt) {
            multiplier = (multiplier == 2 ? 1 : 2);
            luhnSum += sum(String.valueOf(digit * multiplier).split(""));
        }
        int luhnDigit = (10 - (luhnSum % 10)) % 10;
        return template.replace('\\', ' ').replace('/', ' ').trim().replace('L', String.valueOf(luhnDigit).charAt(0));
    }

    public String creditCard() {
        CreditCardType type = randomCreditCardType();
        return creditCard(type);
    }

    /**
     * Generates a random Business Identifier Code
     */
    public String bic() {
        return faker.regexify("([A-Z]){4}([A-Z]){2}([0-9A-Z]){2}([0-9A-Z]{3})?");
    }

    public String iban() {
        List<String> countryCodes = new ArrayList<String>(countryCodeToBasicBankAccountNumberPattern.keySet());
        String randomCountryCode = countryCodes.get(faker.random().nextInt(countryCodes.size()));
        return iban(randomCountryCode);
    }

    public String iban(String countryCode) {
        String basicBankAccountNumber = faker.regexify(countryCodeToBasicBankAccountNumberPattern.get(countryCode));
        String checkSum = calculateIbanChecksum(countryCode, basicBankAccountNumber);
        return countryCode + checkSum + basicBankAccountNumber;
    }