how to check if upc is valid

"^\\w+ ([-_.]?" \\w+) *@\\w+ ([\\.-]?\\w+) * (\\.\\w{2,6}) +$ " This is my Java program to check the e-mail format is legitimate regular expression, see a blog post on the Internet, and I used the expression similar, reprinted over, for everyone to study together. ------------------------------The following are reproduced articles--------------------------------

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> /// /// Check whether the URL link is valid /// /// /// Public Static Bool Checkuri ( String Struri){ Try {System. net. httpwebrequest. Create (struri). getresponse (); Return True ;}

This article describes an example of PHP using mb_check_encoding to check whether the string is valid in the specified encoding. This article describes an example of PHP using mb_check_encoding to check whether the string is valid

We sometimes need to check the validity of the Web site (URL) entered by the user, Copy Code code as follows: function Checkurl (str) { var regurl = new RegExp (); Regurl.compile ("^[a-za-z]+://[a-za-z0-9-_]+\.[ a-za-z0-9-_%?/.=]+$ "); if (! Regurl.test (str)) { return false; } return true; } Not only from the format, but also to check whether the user entered the URL

This article describes how to use mb_check_encoding in PHP to check whether the string is valid in the specified encoding. For example, mb_check_encoding-to check whether the string is valid in the specified encoding. PHP version

This article describes how to use mb_check_encoding in PHP to check whether the string is valid in the specified encoding. for example, mb_check_encoding-to check whether the string is valid in the specified encoding. PHP version

Sometimes we need to check the validity of the website (URL) you enter, The code is as follows:Copy code Function CheckUrl (str ){Var RegUrl = new RegExp ();RegUrl. compile ("^ [A-Za-z] +: // [A-Za-z0-9-_] + \. [A-Za-z0-9-_ % ? /. =] + $ ");If (! RegUrl. test (str )){Return false; }Return true;} Check whether the URL entered by the user

Error: no valid device is found for creating a file system. Check your hardware to find the cause of the problem-general Linux technology-Linux technology and application information. The following is a detailed description. Problem: When Fedora is installed in the VM, the f

With VS2010 Open VS2008 write vb.net program, but not open; later, I vb.net did not install; So come on vb.net, but add vb.net, click "Update" after the error "The selected drive is no longer valid, please check the installation path settings before continuing the installation "，Online explanation is installed VS2010 S

Recently, an embedded protocol conversion software has been developed in C ++ in Linux. It has the time function and needs to verify the validity of the received date and time, and then set the date and time of the local machine. The validity check of the time is relatively simple, and the date is more complex. You need to consider the size of the month and the l