java 邮箱号码校验工具类

import java.util.regex.Pattern;

public class EmailUtil {

    
    public static boolean isEmail(String email) {
        if ((email != null) && (!email.isEmpty())) {
            return Pattern.matches("^(\w+([-.][A-Za-z0-9]+)*){3,18}@\w+([-.][A-Za-z0-9]+)*\.\w+([-.][A-Za-z0-9]+)*$", email);
        }
        return false;
    }
}