Creating a Custom Validator

Question

I follow the step in http://www.netbeans.org/kb/articles/jAstrologer-validate.html, I have a problem on Creating a Custom Validator, I always get error on Netbean , How the EmailValidator implements Validator in here , what concept I miss
package Hell.validator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
* @author root
public class EmailValidator implements Validator {
  public void validate(FacesContext facesContext,
            UIComponent uIComponent, Object value) throws ValidatorException {
        //Get the component's contents and cast it to a String
         String enteredEmail = (String)value;
        //Set the email pattern string
        Pattern p = Pattern.compile(".+@.+\\.[a-z]+");
        //Match the given string with the pattern
        Matcher m = p.matcher(enteredEmail);
        //Check whether match is found
        boolean matchFound = m.matches();
        if (!matchFound) {
            FacesMessage message = new FacesMessage();
            message.setDetail("Email not valid - The email must be in the format [email protected]");
            message.setSummary("Email not valid - The email must be in the format [email protected]");
            message.setSeverity(FacesMessage.SEVERITY_ERROR);
            throw new ValidatorException(message);
}

Answer 1

Darryl.Burke wrote:
Never heard of that error.Neither do I.