How to specify an SMTP port rather than 25 in JavaMail?

Question

This is my segment of code, but I don't know where I can specify the SMTP port. Please help me.
Properties props = System.getProperties();
props.put("mail.smtp.host", "smtp.mail.yahoo.com");
Session session = Session.getDefaultInstance(props,
    new MyAuthenticator("dxxvi", "nopassword"));
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress("[email protected]",
                                    "Thai Dang Vu"));
message.addRecipient(Message.RecipientType.TO,
    new InternetAddress("[email protected]"));
message.setSubject("I test the Yahoo! Mail Plus service");
message.setSentDate(new Date());
Multipart multipart = new MimeMultipart();
BodyPart bodyPart = new MimeBodyPart();
bodyPart.setText("If you can read this, $19.99/year is worthy");
multipart.addBodyPart(bodyPart);
bodyPart = new MimeBodyPart();
bodyPart.setDataHandler(
    new DataHandler(new FileDataSource("Resume.doc")));
bodyPart.setFileName("Resume.doc");
multipart.addBodyPart(bodyPart);
message.setContent(multipart);
Transport.send(message);

Answer 1

props.put("mail.smtp.port", "42");