function readOnly(count){ }
Sign Up ›
Starting November 20, the site will be set to read-only. On December 4, 2023,
forum discussions will move to the Trailblazer Community.
Learn More

Browse by Topic
ShowAll Questionssorted byDate Posted
+ Start a Discussion
paul-lmipaul-lmi 

regex for grabbing email address from a string

I wrote the following

 

 

	Public Static String getEmailFromSubjecct(String Subject){
		
		// First, instantiate a new Pattern object "MyPattern"
		String emailRegex = '(\\w+)@(\\w+\\.)(\\w+)(\\.\\w+)*';
		Pattern MyPattern = Pattern.compile(emailRegex);

		// Then instantiate a new Matcher object "MyMatcher"
		Matcher MyMatcher = MyPattern.matcher(Subject);	
		
		boolean hasMatch = MyMatcher.matches();
		String match = MyMatcher.group(0);
		return match;
	}
 the variable "hasMatches" returns "true" when I call this with
 
EmailTools.getEmailFromSubject('test@test.com is an email address');
 
but  the string "match" fails with "System.StringException: No match found"
 
I am lost here.  Why would the .matches() method return true if there are no matches? 
 


paul-lmipaul-lmi
Hmm
 
adding 
 
Boolean found = MyMatcher.find();
 
before my call to the group() method seems to solve this issue.  Not sure why. 


cpetersoncpeterson
God thank you for posting this. I was pulling my hair out about why group() wasn't ever finding anything.


oracleoracle
samba.gao@meginfo.com  verification not successfully.


Rune_WaageRune_Waage
Hi
The below code will work with addresses of type "samba.gao@meginfo.com" as well.
 
Please note that you'll need to use "myMatcher.find()" or else the use of myMatcher.group() will give an error message even thoug there is a match.
 
String text = 'Send email to my.email@mycompany.com';

String regex = '([a-zA-Z0-9_\\-\\.]+)@(((\\[a-z]{1,3}\\.[a-z]{1,3}\\.[a-z]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3}))';		
Pattern myPattern = Pattern.compile(regex );	
Matcher myMatcher = myPattern.matcher(text);

//The below code will give you my.email@mycompany.com in the debug log.		
if (myMatcher.find()) {
     System.debug(myMatcher.group());
}