Android Credit Card Check FormatAmericanExpress( String UnformattedAccountNumber, String Seperator)

Description

Format American Express

Declaration

public static String FormatAmericanExpress(
            String UnformattedAccountNumber, String Seperator) 

Method Source Code

//package com.java2s;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static final String DEFAULT_SEPERATOR = "-";

    public static String FormatAmericanExpress(
            String UnformattedAccountNumber, String Seperator) {
        //Sample format: 3714-496353-98431 [4 - 6 - 5 for a total of 15 digits] 
        if (UnformattedAccountNumber == null) {
            return "";
        }//from   ww w. j  a v  a  2  s .c o m

        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;
    }

    public static String UnFormatAccountNumber(String AccountNumber) {
        /*      StringBuilder sb = new StringBuilder();
              Pattern p = Pattern.compile("(\\d+)");
              Matcher m = p.matcher(AccountNumber);
              while (m.find())
              {
                 sb.append(m.group(1));
              }
              return sb.toString();*/

        String result = AccountNumber;
        if (containsNonNumericCharacters(AccountNumber)) {
            StringBuilder sb = new StringBuilder();
            Pattern p = Pattern.compile("(\\d+)");
            Matcher m = p.matcher(AccountNumber);
            while (m.find()) {
                sb.append(m.group(1));
            }
            result = sb.toString();
        }
        return result;
    }

    public static String FormatAccountNumber(
            String UnformattedAccountNumber, int subGroupLength,
            String Seperator) {

        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);
        }
        // remove the last Seperator
        String formattedAccountNumber = result.toString();
        formattedAccountNumber = formattedAccountNumber.substring(0,
                formattedAccountNumber.length() - Seperator.length());
        return formattedAccountNumber;

    }

    public static boolean containsNonNumericCharacters(String rawInput) {
        Pattern p = Pattern.compile("(\\D+)");
        Matcher m = p.matcher(rawInput);
        return m.find();
    }
}

Related

1. IsJCBCreditCard(String UnformattedAccountNumber)
2. IsMasterCardCreditCard( String UnformattedAccountNumber)
3. IsVISACreditCard(String UnformattedAccountNumber)
4. FindCreditCard(String AccountNumber)
5. FormatAccountNumber( String UnformattedAccountNumber, int subGroupLength, String Seperator)
6. FormatDinersClub(String UnformattedAccountNumber, String Seperator)