Java – Solve error javax.mail.AuthenticationFailedException

I'm not familiar with this function to send mail in java. I'm getting an error while sending email to reset a password. Hope you can give me a solution.

Below is my code:

public synchronized static boolean sendMailAdvance(String emailTo, String subject, String body)
{
    String host = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-ADDRESS");
    String userName = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-USERNAME");
    String password = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-PASSWORD");
    String port = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-PORT");
    String starttls = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-STARTTLS");
    String socketFactoryClass = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-SOCKET-CLASS");
    String fallback = AppConfigManager.getProperty("SENDER-EMAIL-SMTP-ALLOW-FALLBACK");                         

    try
    {
        java.util.Properties props = null;
        props = System.getProperties();
        props.put("mail.smtp.user", userName);
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.debug", "true");

        if(!"".equals(port))
        {
            props.put("mail.smtp.port", port);
            props.put("mail.smtp.socketFactory.port", port);
        }

        if(!"".equals(starttls))
            props.put("mail.smtp.starttls.enable",starttls);

        if(!"".equals(socketFactoryClass))                   
            props.put("mail.smtp.socketFactory.class",socketFactoryClass);

        if(!"".equals(fallback))
            props.put("mail.smtp.socketFactory.fallback", fallback);

        Session session = Session.getDefaultInstance(props, null);
        session.setDebug(true);

        MimeMessage msg = new MimeMessage(session);
        msg.setFrom(new InternetAddress(userName));
        msg.setSubject(subject);                
        msg.setText(body, "ISO-8859-1");
        msg.setSentDate(new Date());
        msg.setHeader("content-Type", "text/html;charset=\"ISO-8859-1\"");
        msg.addRecipient(Message.RecipientType.TO, new InternetAddress(emailTo));
        msg.saveChanges();

        Transport transport = session.getTransport("smtp");
        transport.connect(host, userName, password);
        transport.sendMessage(msg, msg.getAllRecipients());
        transport.close();
            return true;
    }
    catch (Exception mex)
    {
        mex.printStackTrace();
        return false;
    }
}

Throws the following error:

DEBUG: setDebug: JavaMail version 1.4.1ea-SNAPSHOT

DEBUG: getProvider() returning   javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]

DEBUG SMTP: useEhlo true, useAuth true

DEBUG SMTP: trying to connect to host "smtp.gmail.com", port 465, isSSL false 220 mx.google.com ESMTP m4sm5929870pbg.38 – gsmtp

DEBUG SMTP: connected to host "smtp.gmail.com", port: 465

EHLO fatin

250-mx.google.com at your service, [175.139.198.14]

250-SIZE 35882577

250-8BITMIME

250-AUTH LOGIN PLAIN XOAUTH XOAUTH2 PLAIN-CLIENTTOKEN

250-ENHANCEDSTATUSCODES

250 CHUNKING

DEBUG SMTP: Found extension "SIZE", arg "35882577"

DEBUG SMTP: Found extension "8BITMIME", arg ""

DEBUG SMTP: Found extension "AUTH", arg "LOGIN PLAIN XOAUTH XOAUTH2 PLAIN-CLIENTTOKEN"

DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""

DEBUG SMTP: Found extension "CHUNKING", arg ""

DEBUG SMTP: Attempt to authenticate

AUTH LOGIN

334 VXNlcm5hbWU6

YWNjb3VudEBibG9vbWluZy5jb20ubXk=

334 UGFzc3dvcmQ6

Ymxvb21pbmc=
535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8 http://support.google.com/mail/bin/answer.py?answer=14257

m4sm5929870pbg.38 – gsmtp

[STDOUT] javax.mail.AuthenticationFailedException

[STDOUT] at javax.mail.Service.connect(Service.java:319)

[STDOUT] at javax.mail.Service.connect(Service.java:169)

[STDOUT] at com.vlee.util.mail.SendMail.sendMailAdvance(SendMail.java:283)

[STDOUT] at com.vlee.servlet.ecommerce.DoMemberLogin.fnSendPwd(DoMemberLogin.java:251)

[STDOUT] at com.vlee.servlet.ecommerce.DoMemberLogin.doPost(DoMemberLogin.java:72)