Code for validating email in java
In this article we will show how to perform functional validation in Java with the Functional Library Cyclops and Functional Java (in part 2 below).
Working with Functional style validation may seem daunting at first, but is an extremely flexible, clean and powerful pattern.
DOTALL is a flag in most recent regex libraries that makes the . There is no 100% reliable solution since the RFC is way too complex. ] )*@([a-z0-9_][-a-z0-9_]*(\.[-a-z0-9_] )*\.(aero|arpa|biz|com|coop|edu|gov|info|int|mil|museum|name|net|org|pro|travel|mobi|[a-z][a-z])|([0-9]\.[0-9]\.[0-9]\.[0-9]))(:[0-9])? $ This will make sure that every number in the IP address is between 0 and 255, unlike the version using \d which would allow for 999.999.999.999.
metacharacter match anything INCLUDING line breaks. Java Script by default does not support this since the . This is the best solution and should work 99% of the time is. If you want to match an IP within a string, get rid of the leading ^ and trailing $ to use \b (word boundaries) instead. The regular expression is only useful to validate the format of the date as entered by a user.
Make sure to be in global mode (g flag), case insensitive and to have the dot all option on.
This regular expression will match all HTML tags and their attributes.
If you need more examples or solutions, please contact me. Note that in character sets, special characters (., *, ) do not have any special meaning. This means match anything that is a single white space character OR anything that is not a white space character!Generic Validator assert Generic Email("[email protected]") //valid email assert !Generic Email("bhagwatintelligrape.com") // invalid email assert Generic Url(" //valid URL assert !In this case (the string Semigroup), it takes two Strings as input and returns the concatonated String as an output.In the above example because the user is under 18 we will get an with the error that the user is too young.
Recently I was looking for a programmatic way for validating data against well known validation e.g. I have to use them inside custom validator and sometimes in controller/action.