Method isDiscover

src/main/java/com/jdon/util/UtilValidate.java:966–972

Checks to see if the cc number is a valid Discover number @param cc - a string representing a credit card number; Sample number: 6011000000000004(16 digits) @return true, if the credit card number is a valid Discover card number, false otherwise

(String cc)

     *   @return  true, if the credit card number is a valid Discover card number, false otherwise
     */
    public static boolean isDiscover(String cc) {
        String first4digs = cc.substring(0, 4);

        if ((cc.length() == 16) && (first4digs.equals("6011")))
            return isCreditCard(cc);
        return false;
    }

    /** Checks to see if the cc number is a valid EnRoute number
     *   @param    cc - a string representing a credit card number; Sample number: 201400000000009(15 digits)