/**
* @return The card number string consisting of all but the last four digits replaced with bullet
* ('•').
*/
public String getRedactedCardNumber() {
if (cardNumber != null) {
String redacted = "";
if (cardNumber.length() > 4) {
redacted += String.format("%" + (cardNumber.length() - 4) + "s", "").replace(' ', '\u2022');
}
redacted += getLastFourDigitsOfCardNumber();
return CreditCardNumber.formatString(redacted, false, CardType.fromCardNumber(cardNumber));
} else {
return "";
}
}
/** @return A string suitable for display, with spaces inserted for readability. */
public String getFormattedCardNumber() {
return CreditCardNumber.formatString(cardNumber);
}