validate the credit card expiry date using java?

I am looking to validate the credit card expiry date in MM/YY format . I have no clue on how to validate , whether to go for Simple date format / Regex .

Appreciate your help.

Playing devil's advocate...

boolean validateCardExpiryDate(String expiryDate) {
    return expiryDate.matches("(?:0[1-9]|1[0-2])/[0-9]{2}");
}

which translates as:

• a non-capturing group ( What is a non-capturing group? What does a question mark followed by a colon (?:) mean? ) of: 0 followed by 1-9, or 1 followed by 0-2
• followed by "/"
• followed by 0-9, twice.

...so this version requires zero-padded months (01 - 12). Add a ? after the first 0 to prevent this.