/*
 *  IsEmailAddress
 *
 * Created: Mon Apr 22 04:16:12 2002
 * $Revision$
 * Modified: $Date$
 *
 * Author: Jun Inamori
 * E-mail: jun@oop-reserch.com
 *
 * Copyright (c) 1998-2001 Jun Inamori
 * 2-24-7 Shinsenri-Kitamachi, Toyonaka ,
 * Osaka 560-0081 , Japan.
 * All rights reserved.
 *
 */
package com.oopreserch.web;

import java.util.regex.*;

/**
 * Implementation of {@link FormValueVerifier} interface.
 * Returns <i>true</i> for the valid e-mail address.
 *
 * @author Jun Inamori
 */
public class IsEmailAddress implements FormValueVerifier{

    static private final String REGEX="^[a-zA-Z]([a-zA-Z0-9]|\\.|\\-|\\_)*[a-zA-Z0-9]\\@([a-zA-Z0-9])([a-zA-Z0-9]|\\.|\\-|\\_)*\\.([a-zA-Z0-9]|\\.|\\-|\\_)*([a-zA-Z])";
    static private final Pattern PATTERN=Pattern.compile(REGEX);

/**
 * Returns <i>true</i> for the valid e-mail address.
 *
 * @param str String to be tested.
 * @return <i>true</i> for the valid e-mail address.
 */
    public boolean isValidString(String str){
	return ((PATTERN.matcher(str)).matches());
    }

} //End of : IsEmailAddress