Java Regular Expressions to Validate Credit Cards

Visa Card

^4[0-9]{12}(?:[0-9]{3})?$^5[1-5][0-9]{14}$

Amex Card

^3[47][0-9]{13}$

Carte Blanche Card

^389[0-9]{11}$

Diners Club Card

^3(?:0[0-5]|[68][0-9])[0-9]{11}$

Discover Card

^65[4-9][0-9]{13}|64[4-9][0-9]{13}|6011[0-9]{12}|(622(?:12[6-9]|1[3-9][0-9]|[2-8][0-9][0-9]|9[01][0-9]|92[0-5])[0-9]{10})$

JCB Card

^(?:2131|1800|35\d{3})\d{11}$

Visa Master Card

^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14})$

Insta Payment Card

^63[7-9][0-9]{13}$

Laser Card

^(6304|6706|6709|6771)[0-9]{12,15}$

Maestro Card

^(5018|5020|5038|6304|6759|6761|6763)[0-9]{8,15}$

Solo Card

^(6334|6767)[0-9]{12}|(6334|6767)[0-9]{14}|(6334|6767)[0-9]{15}$

Switch Card

^(4903|4905|4911|4936|6333|6759)[0-9]{12}|(4903|4905|4911|4936|6333|6759)[0-9]{14}|(4903|4905|4911|4936|6333|6759)[0-9]{15}|564182[0-9]{10}|564182[0-9]{12}|564182[0-9]{13}|633110[0-9]{10}|633110[0-9]{12}|633110[0-9]{13}$

Union Pay Card

^(62[0-9]{14,17})$

KoreanLocalCard

^9[0-9]{15}$

BCGlobal

^(6541|6556)[0-9]{12}$

As you can see, regular expressions are incredibly powerful and the above examples are very basic. Regular expressions are essential for all sorts of application from web scraping, form validation and pattern matching.

Hopefully you will find this resource useful and would come back to refer again and again.