Hi i am unable to send mail from yahoo mail id.can any one help on this?

Question

import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.io.*;
import java.util.Properties;
public class MailClient
  public void sendMail(String mailServer, String from, String to,
                             String subject, String messageBody,
                             String[] attachments) throws
MessagingException, AddressException
         // Setup mail server
         Properties props = System.getProperties();
         props.put("mail.smtp.host", mailServer);
         // Get a mail session
         Session session = Session.getDefaultInstance(props, null);
         // Define a new mail message
         Message message = new MimeMessage(session);
         message.setFrom(new InternetAddress(from));
         message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
         message.setSubject(subject);
         // Create a message part to represent the body text
         BodyPart messageBodyPart = new MimeBodyPart();
         messageBodyPart.setText(messageBody);
         //use a MimeMultipart as we need to handle the file attachments
         Multipart multipart = new MimeMultipart();
         //add the message body to the mime message
         multipart.addBodyPart(messageBodyPart);
         // add any file attachments to the message
         addAtachments(attachments, multipart);
         // Put all message parts in the message
         message.setContent(multipart);
         // Send the message
         Transport.send(message);
     protected void addAtachments(String[] attachments, Multipart multipart)
                     throws MessagingException, AddressException
         for(int i = 0; i<= attachments.length -1; i++)
             String filename = attachments;
MimeBodyPart attachmentBodyPart = new MimeBodyPart();
//use a JAF FileDataSource as it does MIME type detection
DataSource source = new FileDataSource(filename);
attachmentBodyPart.setDataHandler(new DataHandler(source));
//assume that the filename you want to send is the same as the
//actual file name - could alter this to remove the file path
attachmentBodyPart.setFileName(filename);
//add the attachment
multipart.addBodyPart(attachmentBodyPart);
public static void main(String[] args)
try
MailClient client = new MailClient();
String server="pop3.yahoo.com";
String from="[email protected]";
String to = "[email protected]";
String subject="Test";
String message="Testing";
String[] filenames = {"c:\\gopi.txt"};
client.sendMail(server,from,to,subject,message,filenames);
catch(Exception e)
e.printStackTrace(System.out);     
while compliling this one its compiled succesfully but i am getting exception at run time like..D:\mail>java MailClient
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/activation/re
gistries/MailcapFile
at javax.activation.MailcapCommandMap.loadFile(MailcapCommandMap.java:275)
at javax.activation.MailcapCommandMap.<init>(MailcapCommandMap.java:128)
at javax.activation.CommandMap.getDefaultCommandMap(CommandMap.java:44)
at javax.activation.DataHandler.getCommandMap(DataHandler.java:136)
at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:568)
at javax.activation.DataHandler.getContent(DataHandler.java:501)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1253)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2012)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:1980)
at javax.mail.Transport.send(Transport.java:97)
at MailClient.sendMail(MailClient.java:35)
at MailClient.main(MailClient.java:72)
can any one help on this....plz
thanks in advance
Edited by: Konapalli.Gopi on May 20, 2010 5:42 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

Something's wrong with your CLASSPATH.
If you're not using JDK 6, you need to include activation.jar in your CLASSPATH.
If you've got any other jar files that define the javax.mail.* or javax.activation.* classes
in your CLASSPATH (such as javaee.jar or j2ee.jar), remove them.