Android Utililty Methods Credit Card Check

List of utility methods to do Credit Card Check

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Description

The list of methods to do Credit Card Check are organized into topic(s).

Method

booleanIsAmericanExpressCreditCard( String UnformattedAccountNumber)
Is American Express Credit Card 
Pattern p = Pattern.compile("^3[47][0-9]{13}$");
Matcher m = p.matcher(UnformattedAccountNumber);
return m.matches();
booleanIsDinersClubCreditCard( String UnformattedAccountNumber)
Is Diners Club Credit Card 
Pattern p = Pattern.compile("^3(?:0[0-5]|[68][0-9])[0-9]{11}$");
Matcher m = p.matcher(UnformattedAccountNumber);
return m.matches();
booleanIsDiscoverCreditCard( String UnformattedAccountNumber)
Is Discover Credit Card 
Pattern p = Pattern.compile("^6(?:011|5[0-9]{2})[0-9]{12}$");
Matcher m = p.matcher(UnformattedAccountNumber);
return m.matches();
booleanIsJCBCreditCard(String UnformattedAccountNumber)
Is JCB Credit Card 
Pattern p = Pattern.compile("^(?:2131|1800|35\\d{3})\\d{11}$");
Matcher m = p.matcher(UnformattedAccountNumber);
return m.matches();
booleanIsMasterCardCreditCard( String UnformattedAccountNumber)
Is Master Card Credit Card 
Pattern p = Pattern.compile("^5[1-5][0-9]{14}$");
Matcher m = p.matcher(UnformattedAccountNumber);
return m.matches();
booleanIsVISACreditCard(String UnformattedAccountNumber)
Is VISA Credit Card 
Pattern p = Pattern.compile("^4[0-9]{12}(?:[0-9]{3})?$");
Matcher m = p.matcher(UnformattedAccountNumber);
return m.matches();
intFindCreditCard(String AccountNumber)
Find Credit Card 
if (AccountNumber == null) {
    return NOT_RECOGNIZED;
AccountNumber = UnFormatAccountNumber(AccountNumber);
AccountNumber = AccountNumber.trim();
if (AccountNumber.length() == 0) {
    return NOT_RECOGNIZED;
if (IsVISACreditCard(AccountNumber)) {
    return VISA;
} else if (IsMasterCardCreditCard(AccountNumber)) {
    return MASTERCARD;
} else if (IsAmericanExpressCreditCard(AccountNumber)) {
    return AMERICAN_EXPRESS;
} else if (IsDinersClubCreditCard(AccountNumber)) {
    return DINERS_CLUB;
} else if (IsDiscoverCreditCard(AccountNumber)) {
    return DISCOVER;
} else if (IsJCBCreditCard(AccountNumber)) {
    return JCB;
} else {
    return NOT_RECOGNIZED;
StringFormatAccountNumber( String UnformattedAccountNumber, int subGroupLength, String Seperator)
Format Account Number 
if (UnformattedAccountNumber == null) {
    return "";
UnformattedAccountNumber = UnFormatAccountNumber(UnformattedAccountNumber);
UnformattedAccountNumber = UnformattedAccountNumber.trim();
if (UnformattedAccountNumber.length() == 0) {
    return "";
if (Seperator == null) {
    Seperator = DEFAULT_SEPERATOR;
if (subGroupLength < 1) {
    subGroupLength = 4;
int end = 0;
StringBuilder result = new StringBuilder();
for (int start = 0; start < UnformattedAccountNumber.length(); start += subGroupLength) {
    end = start + subGroupLength;
    if (end > UnformattedAccountNumber.length()) {
        end = UnformattedAccountNumber.length();
    result.append(UnformattedAccountNumber.substring(start, end));
    result.append(Seperator);
String formattedAccountNumber = result.toString();
formattedAccountNumber = formattedAccountNumber.substring(0,
        formattedAccountNumber.length() - Seperator.length());
return formattedAccountNumber;
StringFormatAmericanExpress( String UnformattedAccountNumber, String Seperator)
Format American Express 
if (UnformattedAccountNumber == null) {
    return "";
UnformattedAccountNumber = UnFormatAccountNumber(UnformattedAccountNumber);
UnformattedAccountNumber = UnformattedAccountNumber.trim();
if (UnformattedAccountNumber.length() == 0) {
    return "";
if (Seperator == null) {
    Seperator = DEFAULT_SEPERATOR;
String formattedAccountNumber = "";
StringBuilder sb = new StringBuilder();
if (UnformattedAccountNumber.length() == 15) {
    sb.append(UnformattedAccountNumber.substring(0, 4));
    sb.append(Seperator);
    sb.append(UnformattedAccountNumber.substring(4, 10));
    sb.append(Seperator);
    sb.append(UnformattedAccountNumber.substring(10, 15));
    formattedAccountNumber = sb.toString();
} else {
    formattedAccountNumber = FormatAccountNumber(
            UnformattedAccountNumber, 4, Seperator);
return formattedAccountNumber;
StringFormatDinersClub(String UnformattedAccountNumber, String Seperator)
Format Diners Club 
if (UnformattedAccountNumber == null) {
    return "";
UnformattedAccountNumber = UnFormatAccountNumber(UnformattedAccountNumber);
UnformattedAccountNumber = UnformattedAccountNumber.trim();
if (UnformattedAccountNumber.length() == 0) {
    return "";
if (Seperator == null) {
    Seperator = DEFAULT_SEPERATOR;
String formattedAccountNumber = "";
StringBuilder sb = new StringBuilder();
if (UnformattedAccountNumber.length() == 14) {
    sb.append(UnformattedAccountNumber.substring(0, 4));
    sb.append(Seperator);
    sb.append(UnformattedAccountNumber.substring(4, 10));
    sb.append(Seperator);
    sb.append(UnformattedAccountNumber.substring(10, 14));
    formattedAccountNumber = sb.toString();
} else {
    formattedAccountNumber = FormatAccountNumber(
            UnformattedAccountNumber, 4, Seperator);
return formattedAccountNumber;