Jose Martinez jmart1
gabrielbauman
/ CardType.java
Last active
December 13, 2023 04:21
A Java enum representing credit card types (Visa, Mastercard etc) that can detect card type from a credit card number.
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| package com.gabrielbauman.gist; | |
| import java.util.regex.Pattern; | |
| public enum CardType { | |
| UNKNOWN, | |
| VISA("^4[0-9]{12}(?:[0-9]{3}){0,2}$"), | |
| MASTERCARD("^(?:5[1-5]|2(?!2([01]|20)|7(2[1-9]|3))[2-7])\\d{14}$"), | |
| AMERICAN_EXPRESS("^3[47][0-9]{13}$"), |