Java EE (Java Enterprise Edition) General Discussion

I'm trying to send attachments with emails using Javamail. Following is the code through which I'm trying to achieve that. It works as expected on a JRE1.6 environment. But on JRE1.5, the content of the file gets added to the mail body as text.I want the file to be sent as an attachment.

Any pointers on the observed difference in behavior would be highly appreciated!

 String msgText = mailInfo.getMessage();
        String attachmentFileName = mailInfo.getFileName();
        MimeBodyPart mimeBodyPart = new MimeBodyPart();
        mimeBodyPart.setText(msgText);
        // create the second message part
        MimeBodyPart attachmentBodyPart = new MimeBodyPart();
        // attach the file to the message

        FileDataSource fileDataSource = new FileDataSource(attachmentFileName);
        attachmentBodyPart.setFileName(fileDataSource.getName());
        attachmentBodyPart.setDataHandler(new DataHandler(fileDataSource));
        

        // create the Multipart and add its parts to it
        Multipart multipart = new MimeMultipart();
        multipart.addBodyPart(mimeBodyPart);
        multipart.addBodyPart(attachmentBodyPart);

        message.setContent(multipart);

The email in case of JRE1.5 is as follows

{color:#0000ff}------=_Part_0_33189144.1233078680250
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Hi...Test Mail
------=_Part_0_33189144.1233078680250
Content-Type: application/octet-stream; name=corba_architecture.pdf
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=corba_architecture.pdf
Content-ID: Attachment

JVBERi0xLjIgDSXi48/TDQogDTggMCBvYmoNPDwNL0xlbmd0aCA5IDAgUg0vRmlsdGVyIC9GbGF0
ZURlY29kZSANPj4Nc3RyZWFtDQpIiUWPW07DMBBFV+A93E9QlWBP/Kj5awt8USFRbyBKnTQIkshK
YfvYcQoaybrSzDkzFhCxQgemeWkUyKTXEIeSHMGjZXvHSFBJCpXUpQLcE+NIlbCHFw4pUxeuZQUv
ueY25gYxk9mKmH9wtwvNpZ99M1+jc2wxXzxweHvf73AP9xGFhaIsTyC3/w6ZDYfxaxoHP8w4jmf/

......

------=_Part_0_33189144.1233078680250-- {color}