How to Validate Email Using RegularExpression

We can validate Email using regularExpression support given by JDK 

  EmailValidation.java

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import java.util.regex.Matcher; import java.util.regex.Pattern; public class EmailValidation{     public static void main(String args[]){         Pattern pattern;         Matcher matcher;         String email="suraj20p@gmail.com";         String EMAIL_PATTERN = "^[_A-Za-z0-9]+(\\.[_A-Za-z0-9]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";         //compile our pattern         pattern = Pattern.compile(EMAIL_PATTERN);         //pass our email to matcher,so that it can be checked whether pattern is matching or not         matcher = pattern.matcher(email);         //check whether string is matched or not         boolean result= matcher.matches();         if(result)           System.out.println("Email Validated Successfully");         else            System.out.println("Invalid Email Address");     }  }