Email someone from an application

Question

Does anyone know what to send emails from a java application?
I want to select the infromation to go into the email from a database, then email this information to someone...
I need this to be done automatically...
For example, when someone updates their user profile, i want to send an email automatically to their account with their new details.....
I just dont know where to start....
all suggestions will be welcomed...

Answer 1

Use this class:
public class SendMail {
   * Creates a SendMail instance. Same as:
   * <code>SenMail(from, to, null, subject, message,
   * "Amic-Mailer", mailhost, user, password, new Date())</code>
  public SendMail(String from,
                  String to,
                  String subject,
                  String message,
                  String mailhost,
                  String user,
                  String password) {
    this(from, to, null, subject, message,
          "Amic-Mailer", mailhost, user, password, new Date());
   * Creates a SendMail instance.
   * @param from From address. Can be a null value.
   * @param to To addresses, coma or space separated.
   * @param cc CC addresses, coma or space separated.
   * @param subject Subject of the message.
   * @param message The body of the message.
   * @param mailer Set as the X-Mailer header.
   * @param mailhost The SMTP server.
   * @param user User name. If null then no authentication is used.
   * @param password Password.
   * @param date Date set to the sent date field.
  public SendMail(String from,
                  String to,
                  String cc,
                  String subject,
                  String message,
                  String mailer,
                  String mailhost,
                  String user,
                  String password,
                  Date date) {
    this.from = from;
    this.to = to;
    this.cc = cc;
    this.subject = subject;
    this.message = message;
    this.mailer = mailer;
    this.mailhost = mailhost;
    this.user = user;
    this.password = password;
    this.date = date;
   * Performs the action of sending.
   * @throws MessagingException As described in JavaMail API.
  public void send()  throws MessagingException {
    Properties props = System.getProperties();
    if(mailhost != null)
        props.put("mail.smtp.host", mailhost);
    if(user != null)
      props.put("mail.smtp.auth", "true");
    else
      props.put("mail.smtp.auth", "false");
    Session session = Session.getDefaultInstance(props, null);
    Message msg = new MimeMessage(session);
    if (from != null)
      msg.setFrom(new InternetAddress(from));
    else
      msg.setFrom();
    msg.setRecipients(
      Message.RecipientType.TO,
      InternetAddress.parse(to, false)
    if (cc != null)
      msg.setRecipients(
        Message.RecipientType.CC,
        InternetAddress.parse(cc, false)
    msg.setSubject(subject);
    msg.setText(message);
    msg.setHeader("X-Mailer", mailer);
    msg.setSentDate(date);
    if(user != null) {
      msg.saveChanges();
      Transport transport = session.getTransport("smtp");
      transport.connect(mailhost, user, password);
      transport.sendMessage(msg, msg.getAllRecipients());
      transport.close();
    else
      Transport.send(msg);
  private String from, to, cc, subject, message,
          mailer, mailhost, user, password;
  private Date date;
}You will need this jar files in your classpath:
activation.jar (from JavaBeans Activation Framework JAF)
mail.jar (from JavaMail)