Advanced Java Programming - Old Questions

9. Discuss the process of sending email messages using Java.

import java.util.Properties;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.PasswordAuthentication;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

public class SendMail {

    public static void main(String[] args) {

        // Recipient's email ID needs to be mentioned.

        String to = "fromaddress@gmail.com";

        // Sender's email ID needs to be mentioned

        String from = "toaddress@gmail.com";

        // Assuming you are sending email from through gmails smtp

        String host = "smtp.gmail.com";

        // Get system properties

        Properties properties = System.getProperties();

        // Setup mail server

        properties.put("mail.smtp.host", host);

    properties.put("mail.smtp.port", "465");

    properties.put("mail.smtp.ssl.enable", "true");

    properties.put("mail.smtp.auth", "true");

        // Get the Session object.// and pass username and password

        Session session = Session.getInstance(properties, new javax.mail.Authenticator() {

            protected PasswordAuthentication getPasswordAuthentication() {

                return new PasswordAuthentication("fromaddress@gmail.com", "*******");

            }

        });

        // Used to debug SMTP issues

        session.setDebug(true);

        try {

            // Create a default MimeMessage object.

            MimeMessage message = new MimeMessage(session);

            // Set From: header field of the header.

            message.setFrom(new InternetAddress(from));

            // Set To: header field of the header.

            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

            // Set Subject: header field

            message.setSubject("This is the Subject Line!");

            // Now set the actual message

            message.setText("This is actual message");

       System.out.println("sending...");

            // Send message

            Transport.send(message); 

       System.out.println("Sent message successfully....");

        } catch (MessagingException mex) {

            mex.printStackTrace();

        }

    }

}