Validating Email address pattern in Android/Java

We use regular expressions along with Pattern & Matcher classes and their methods to validate email address

Required regular expression is  as below:

String regExpn =

"^(([\\w-]+\\.)+[\\w-]+|([a-zA-Z]{1}|[\\w-]{2,}))@"

    +"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"

      +"[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\."

      +"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"

      +"[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"

      +"([a-zA-Z]+[\\w-]+\\.)+[a-zA-Z]{2,4})$";

Validation code goes as below:

private Boolean isValidEmail(String inputEmail)

{

      Pattern patternObj = Pattern.compile(regExpn);

      Matcher matcherObj = patternObj.matcher(inputEmail/*May be fetched from  EditText. This string is the one which you wanna validate for email*/);

            if (matcherObj.matches())

            {

                  //Valid email id…

                  return true;

}

            Else

{

//not a valid email id…

                  return false;

}

}

Happy coding:-)