Duvida como anexar imagem em um e-mail

import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

import java.util.Properties;

class SimpleMail2 {
    public static void main(String[] args) throws Exception{
        System.out.println("Sending mail...");
        Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "smtp");
        props.setProperty("mail.host", "smtp.mymailserver.com");
        props.setProperty("mail.user", "myuser");
        props.setProperty("mail.password", "mypwd");

        Session mailSession = Session.getDefaultInstance(props, null);
        mailSession.setDebug(true);
        Transport transport = mailSession.getTransport();

        MimeMessage message = new MimeMessage(mailSession);
        message.setSubject("HTML  mail with images");
        message.setFrom(new InternetAddress("[email removido]"));
        message.addRecipient(Message.RecipientType.TO,
             new InternetAddress("[email removido]"));

        //
        // This HTML mail have to 2 part, the BODY and the embedded image
        //
        MimeMultipart multipart = new MimeMultipart("related");

        // first part  (the html)
        BodyPart messageBodyPart = new MimeBodyPart();
        String htmlText = "<H1>Hello</H1><img src=\"cid:image\">";
        messageBodyPart.setContent(htmlText, "text/html");

        // add it
        multipart.addBodyPart(messageBodyPart);
        
///////////////////////////////////////////////
///////////////////////////////////////////////
        // second part (the image)
        messageBodyPart = new MimeBodyPart();
        DataSource fds = new FileDataSource
          ("C:\\images\\jht.gif");
        messageBodyPart.setDataHandler(new DataHandler(fds));
        messageBodyPart.setHeader("Content-ID","<image>");

        // add it
        multipart.addBodyPart(messageBodyPart);

        // put everything together
        message.setContent(multipart);
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////
        transport.connect();
        transport.sendMessage(message,
            message.getRecipients(Message.RecipientType.TO));
        transport.close();
        }
}