email validation in java without regular expression

PHP Common validation Regular expression, PHP regular expression Number, mobile phone number, QQ number, URL address legality check 1. Verify that it is an integer 1 function isnumber ($val)2 {3 if(ereg $val))4 returntrue; 5 retur

Verify the email address and regular expression. Verify the regular expression. /*** Verify that the email address is correct ** @ param email * @ return */public static boolean checkE

This cell phone number is the correct validation function can be said to be the latest support, which has a detailed description, no matter what the next increase in the number of sections we are very easy to modify a little bit. JavaScript phone number Regular expression validation function Copy Code code as f

Copy the Code code as follows: Literally from the ABNF in rfc3986 (thanks to ' WCP ')function ValidateIPv6 ($IP){Return Preg_match ('/\a(?:(?:(?: [a-f0-9]{1,4}:) {6}::(?: [a-f0-9]{1,4}:) {5}(?: [a-f0-9]{1,4})?::(?: [a-f0-9]{1,4}:) {4}(?:(?: [a-f0-9]{1,4}:) {0,1}[a-f0-9]{1,4})?::(?: [a-f0-9]{1,4}:) {3}(?:(?: [a-f0-9]{1,4}:) {0,2}[a-f0-9]{1,4})?::(?: [a-f0-9]{1,4}:) {2}(?:(?: [a-f0-9]{1,4}:) {0,3}[a-f0-9]{1,4})?:: [a-f0-9]{1,4}:(?:(?: [a-f0-9]{1,4}:) {0,4}[a-f0-9]{1,4})?::)(?:[A-f0-9] {1,4}:[a

=/^[a-za-zd]+ ([-_.] [a-za-zd]+) *@ ([a-za-zd]+[-.]) +[a-za-zd]{2,5}$/; The QQ number of the mailbox can not verify.Emailpreg =/^ ([a-za-z0-9_-]) +@ ([a-za-z0-9_-]) + ((\.[ a-za-z0-9_-]{2,3}) {1,2}) $/;//dfdfd1212@dfdfd.abc.cn are two-level mailboxes. abc@12df1.com.cn Emailpreg =/^ ([a-za-z0-9_-]) +@ ([a-za-z0-9-]) + ((\.[ a-za-z0-9-]{2,3}) {1,2}) $/;//domain name is not allowed to underline, remove the underline, this is the last regular. As for wh

In the registration system development, the need to detect the user input email address is legitimate, can be detected in JS or PHP, but the difference is not small, can use regular expression to detect. Here is an example of JS: Copy Code code as follows: function Validateemail (email) { var re =/^ ([^".

Use the combination of the specific and functional methods, but also check the next Article JavaScript sample code for form validation using regular expressions Copy Code code as follows: Matching regular expressions for Chinese characters: [U4E00-U9FA5] Commentary: Matching Chinese is really a headache, with this

Copy Code code as follows: function Checkmobile () { var smobile = Document.mobileform.mobile.value if (!) ( /^1[3|4|5|8][0-9]\d{4,8}$/.test (Smobile))) { Alert ("Not a full 11-digit cell phone number or the correct number of the top seven"); Document.mobileform.mobile.focus (); return false; } } The following is the cloud Habitat Community editors on the above regular expression