Validation in GWT

Question

I am using GWT and want to so validation of email using the java code i.e. using the regular expressions,but when I am using the code:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package org.ArosysLogin.client;

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

public class EmailValidator{

      private Pattern pattern;
      private Matcher matcher;

      private static final String EMAIL_PATTERN =
                   "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

      public EmailValidator(){
          pattern = Pattern.compile(EMAIL_PATTERN);
      }

      /**
       * Validate hex with regular expression
       * @param hex hex for validation
       * @return true valid hex, false invalid hex
       */
      public boolean validate(final String hex){

          matcher = pattern.matcher(hex);
          return matcher.matches();


      }
}

.It is giving me run time error in the build.xml.Can you please tell me why this is occurring and what is its solution.

Answer 1

Java regex is not available in GWT. You should use GWT's RegExp.

Answer 2

This is code is for validating email id. I have checked it. It's working fine in GWT.

String  s ="[email protected]";
Boolean b = s.matches(
 "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");
System.out.println("email is " + b);