Regular expression in java for validating numbers freinds and dating
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.
🙂 Now we will look at some important methods of Pattern and Matcher classes.
You could try to match for an extension, but there's no requirement for a file to have an extension.
There are probably dozens of way to format a phone number.
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.