Exception in sending attachment

Question

sir,
This is may code of sending attachment but there is run time exception arises.
please you see it &send correct code or guide me.
code:'
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import java.io.*;
import javax.activation.*;
import java.util.Properties;
import javax.swing.*;
import java.lang.*;
public class SendAttachment
public static void main(String args[]) throws Exception
String host ="smtp.gmail.com";
String from="[email protected]";
String to="[email protected]";
String filename="my.jpg";
Properties props = System.getProperties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.starttls.enable","true");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "587") ;
Session ses1 = Session.getInstance(props, null);
Message msg = new MimeMessage(ses1);
msg.setFrom(new InternetAddress(from));
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
msg.setSubject("photo attached");
BodyPart msgBP = new MimeBodyPart();
msgBP.setText("Take a look at this");
Multipart mpart = new MimeMultipart();
mpart.addBodyPart(msgBP);
msgBP = new MimeBodyPart();
DataSource src = new FileDataSource(filename);
msgBP.setDataHandler(new DataHandler(src));
msgBP.setFileName(filename);
mpart.addBodyPart(msgBP);
msg.setContent(mpart);
Transport.send(msg);
exception:-
C:\attachment>java SendAttachment
Exception in thread "main" javax.mail.AuthenticationFailedException
at javax.mail.Service.connect(Service.java:319)
at javax.mail.Service.connect(Service.java:169)
at javax.mail.Service.connect(Service.java:118)
at javax.mail.Transport.send0(Transport.java:188)
at javax.mail.Transport.send(Transport.java:118)
at SendAttachment.main(SendAttachment.java:42)

Answer 1

You've enabled authentication, but you never supplied a username or password.
Start here: http://java.sun.com/products/javamail/FAQ.html#smtpauth