// packages
// imports

public class SendMail {

	public static void sendMail(double price) {
        Properties props = new Properties();

        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");

        Session session = Session.getDefaultInstance(props,
                    new javax.mail.Authenticator() {
                         protected PasswordAuthentication getPasswordAuthentication()
                         {
                               return new PasswordAuthentication("mymail@gmail.com", "***"); // here your mail or pass of the test
                         }
                    });

        session.setDebug(true);
        try {

              Message message = new MimeMessage(session);
              message.setFrom(new InternetAddress("mymail@gmail.com"));

              Address[] toUser = InternetAddress
                         .parse("mymail@gmail.com");
              message.setRecipients(Message.RecipientType.TO, toUser);
              message.setSubject("Send email with new price");
              message.setText("New price is: $"+price);

              Transport.send(message);
              System.out.println("Sending mail completed!!!");
         } catch (MessagingException e) {
              throw new RuntimeException(e);
        }
  }

}