Actually, it's not enough just to get the file name from the part as it might be encoded.
Take a look at the source code for ICEMail at www.icemail.org. You'll find a file called MessageUtilities.java. Look for the getFileName() method.
Cheers.

Hi,
Try out the following code.
It will work for the the IMAP also.
/*For IMAP just change the package name
as com.sun.mail.imap.IMAPMessage*/
javax.mail.internet.MimeMessage mimemsg =new javax.mail.internet.MimeMessage((com.sun.mail.pop3.POP3Message) msg);

javax.mail.internet.MimeMultipart multipart=(javax.mail.internet.MimeMultipart) mimemsg.getContent();

for(int p=0;multipart!=null&&p
javax.mail.internet.MimeBodyPart part=(javax.mail.internet.MimeBodyPart)multipart.getBodyPart(p);

String[] filename=part.getFileName();

}