org.aoju.bus.gitlab.support.EmailChecker Maven / Gradle / Ivy
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* The MIT License (MIT) *
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* Copyright (c) 2015-2022 aoju.org Greg Messner and other contributors. *
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package org.aoju.bus.gitlab.support;
import java.util.regex.Pattern;
public class EmailChecker {
/**
* Java regular expression for validating an email address.
*/
public static final String EMAIL_REGEX =
"(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"" +
"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")" +
"@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:" +
"(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:" +
"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])";
/**
* Java Pattern instance for validating an email address.
*/
public static final Pattern EMAIL_REGEX_PATTERN = Pattern.compile(EMAIL_REGEX);
/**
* Returns true if the provided String is a valid email address.
*
* @param email the email address to check for validity
* @return true if the provided String is a valid email address, otherwise return false
*/
public static final boolean isValidEmail(final String email) {
return (email == null ? false : EMAIL_REGEX_PATTERN.matcher(email).matches());
}
}