Send outlook meeting request using Java Mail API

This Program is useful to send meeting request to the users using Java mail API.We need to include mail.jar in the classpath.

import java.util.Properties;
import javax.activation.DataHandler;
import javax.mail.BodyPart; 
import javax.mail.Message; 
import javax.mail.MessagingException;
import javax.mail.Multipart; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeBodyPart; 
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart; 
import javax.mail.util.ByteArrayDataSource; 
public class Email {

 public void send() throws Exception { 
  try {
   String host = "abc.com";//hostname of the mail server
   String from = "xx.xx.com"; //from internet address
   String to = "xx.xx.com"; //to internet address
   Properties prop = new Properties(); 
   prop.put("mail.host", host);   
   Session session = Session.getDefaultInstance(prop, null); 
   // Define message 
   MimeMessage message = new MimeMessage(session);
   message.addHeaderLine("method=REQUEST");
   message.addHeaderLine("charset=UTF-8"); 
   message.addHeaderLine("component=VEVENT"); 
   message.setFrom(new InternetAddress(from)); 
   message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); 
   message.setSubject("Meeting Request Using JavaMail"); 
   StringBuffer sb = new StringBuffer();  
   StringBuffer buffer = sb.append("BEGIN:VCALENDARn"+
     "PRODID:-//Microsoft Corporation//Outlook 9.0 MIMEDIR//ENn"+
     "VERSION:2.0n" +
     "METHOD:REQUESTn" + 
     "BEGIN:VEVENTn" +
     "ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:xx.xx.comn" + 
     "ORGANIZER:MAILTO:xx.xx.comn" + 
     "DTSTART:20120703T134500Zn" + 
     "DTEND:20120703T140000Zn" + 
     "LOCATION:3N1 Conference roomn" +
     "TRANSP:OPAQUEn" +
     "SEQUENCE:0n" +
     "UID:040000008200E00074C5B7101A82E00800000000002FF466CE3AC5010000000000000000100n" +
     " 000004377FE5C37984842BF9440448399EB02n" +
     "DTSTAMP:20120703T120102Zn" + 
     "CATEGORIES:Meetingn" +
     "DESCRIPTION:This is a test meeting request.checking using JAVA .Please ingore itnn" +
     "SUMMARY:Test meeting requestn" + 
     "PRIORITY:1n" +
     "CLASS:PUBLICn" + 
     "BEGIN:VALARMn" + 
     "TRIGGER:PT1440Mn" +
     "ACTION:DISPLAYn" + 
     "DESCRIPTION:Remindern" +
     "END:VALARMn" +
     "END:VEVENTn" +
   "END:VCALENDAR");  // Create the message part
   BodyPart messageBodyPart = new MimeBodyPart(); 
   // Fill the message  
   messageBodyPart.setHeader("Content-Class", "urn:content-classes:calendarmessage");
   messageBodyPart.setHeader("Content-ID","calendar_message"); 
   messageBodyPart.setDataHandler(new DataHandler( new ByteArrayDataSource(buffer.toString(), "text/calendar")));//very important
   // Create a Multipart  
   Multipart multipart = new MimeMultipart();  
   // Add part one 
   multipart.addBodyPart(messageBodyPart);    
   // Put parts in message
   message.setContent(multipart);  
   // send message 
   Transport.send(message);
  } catch (MessagingException me) {
   me.printStackTrace(); 
  } catch (Exception ex) {
   ex.printStackTrace(); 
  } 
 } 


 /* @param args */ 
 public static void main(String[] args) { 
  try {
   Email email = new Email(); 
   email.send();
   System.out.println("meeting request is sent");
  } catch (Exception e) {
   e.printStackTrace(); 
  }  
 } 
}