CMP Credit Card Validation Amanuensis CMP Credit Card Validation Amanuensis
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This Applet will help you tell if a credit card number is valid. It will also tell you which of the following credit card companies issued the card: Amex, Diners Club, Carte Blanche, Discover, enRoute, JCB, MasterCard or Visa.

It validates the prefix and the checkdigit. It does not contact the credit card company to ensure that number has actually been issued and that the account is in good standing.

The Applet is designed for cannibalising so that you can steal the code you need from it to include in your own programs.

The Credit Card Validator amanuensis is also available with Java source to download. You can optionally run Credit Card Validation Amanuensis as an application by invoking the com.mindprod.creditcard.ValidateCreditCard class.

On the Internet, approximately 70% of transactions are Visa, 27% are Mastercard and 3% are American Express.

If the above Credit Card Validator Java Applet (that can also be run as an application) does not work…

  1. This Java Applet (that can also be run as an application) needs Java 1.5 or later, version 1.5.0_16 or later recommended, ideally 1.6.0_07 and a recent browser.
  2. You should see an Applet above looking much like the screenshot. If you don’t, the following should help you get it working:
  3. If you are using Microsoft Internet Explorer, try another browser. Seriously. Microsoft has taken great pains, over and over, to screw up Java and every other mult-platform standardisation.
  4. If you are using Internet Explorer 7, you must allow blocked content permission for Active X to run. This also gives permission to Java to run. Click the Information bar, and then click Allow blocked content. Unfortunately, this also allows dangerous ActiveX code to run. However, you must do this in order to get access to perfectly-safe Java Applets running in a sandbox. This is part of Microsoft’s war on Java. Don’t put up with it! Use a different browser.
  5. To ensure your Java is up to date, check with Wassup.
  6. If the above Java Applet (that can also be run as an application) does not work, check the Java console for error messages.
  7. If the above Applet hybrid does not work, you might have better luck with the downloadable version.
  8. If you still can’t get the program working click HELP for more detail.
  9. If you can’t get the program working after trying the advice above and from the HELP button below, have bugs to report or ideas to improve the program or its documentation, please send me an email atemail Roedy Green.
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No information will be sent over the web, either to CMP or to the credit card companies. You can verify this by looking at the source code.
PackageVersionReleasedLicenceLanguageNotes 
creditcard
Credit Card Validator		 1.8 2008-03-06 free Java
summary / PAD description / screenshot for the current version of Credit Card Validator. Applet to validate credit card numbers and tell who issued the card.
download Credit Card Validator source and compiled class files to run on your own machine as an application or Applet. First install the most recent Java. To install, extract the zip download with Winzip, (or similar unzip utility) into any directory you please, often J:\ — ticking off the “user folder names” option. To run as an application,type:
java -jar J:\com\mindprod\creditcard\creditcard.jar
adjusting as necessary to account for where the jar file is.
download ASP PAD XML program description for the current version of Credit Card Validator.
Credit Card Validator is free. Full source included. You may even include the source code, modified or unmodified in commercial programs that you write and distribute. Non-military use only.
    
 
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mindprod.com IP:[65.110.21.43]
Your face IP:[38.103.63.16] The information on this page is for non-military use only.
You are visitor number 24,531. Military use includes use by defence contractors.
You can get a fresh copy of this page from: or possibly from your local J: drive (Java virtual drive/Mindprod website mirror)
http://mindprod.com/applet/creditcard.html J:\mindprod\applet\creditcard.html