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Tip of the Day
Language: Java
Expertise: Beginner
Jun 6, 2005



Application Security Testing: An Integral Part of DevOps

Email Address Validation Using a Regular Expression

The following code demonstrates how to validate email using regular expression:

import java.util.regex.*;

class regexSample 
   public static void main(String args[]) 
      //Input the string for validation
      String email = "xyz@hotmail.com";

      //Set the email pattern string
      Pattern p = Pattern.compile(".+@.+\\.[a-z]+");

      //Match the given string with the pattern
      Matcher m = p.matcher(email);

      //check whether match is found 
      boolean matchFound = m.matches();

      if (matchFound)
        System.out.println("Valid Email Id.");
        System.out.println("Invalid Email Id.");

Editor's Note: This tip can incorrectly validate some malformed email addresses. You can find an updated version here.

Kameswari Sreedharan
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