is Email by regex - Java java.util.regex

Java examples for java.util.regex:Match Email

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Description

is Email by regex

Demo Code


import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String[] argv) {
    String searchPhrase = "12312@java2s.com";
    System.out.println(isEmail(searchPhrase));
  }/*  ww  w  .  j a  va  2  s  .c  o  m*/

  public static boolean isEmail(final String searchPhrase) {
    if (isNull(searchPhrase))
      return false;
    final String check = "^\\w+([-+.']\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$";
    final Pattern regex = Pattern.compile(check);
    final Matcher matcher = regex.matcher(searchPhrase);
    return matcher.matches();
  }

  public static boolean isNull(String str) {
    if (str == null || str.length() == 0) {
      return true;
    }
    return false;
  }
}

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