Unable to read attachment from javamail using IMAP

Question

I am unable to read and save attachement in java mail using IMAP, but able to do using POP3
Sample code below:
Multipart multipart = (Multipart) message.getContent();
                         for (int i = 0, n = multipart.getCount(); i < n; i++)
                              Part part = multipart.getBodyPart(i);
                              String disposition = part.getDisposition();
          // here i am getting dispostion null if use IMAP, if  i use POP3 then i can able to recevive attachment                                                  
                              if ((disposition != null) && ((disposition.equals(Part.ATTACHMENT) || (disposition.equals(Part.INLINE)))))
                                   System.out.println("file name is " + part.getFileName());
                                   message.setFlag(Flags.Flag.ANSWERED, true);
                                   saveFile(part.getFileName(), part.getInputStream());
public static void saveFile(String fn, InputStream in) {
          try {
               FileOutputStream fos = new FileOutputStream(new File("c://test//" + fn));
               byte[] buf = new byte[1024];
               int i = 0;
               while ((i = in.read(buf)) != -1) {
                    fos.write(buf, 0, i);
               in.close();
               fos.close();
          } catch (IOException e) {
               e.printStackTrace();
Any help is appreciated
Thanks
Sami

Answer 1

If you're getting disposition == null it's because your IMAP server
isn't returning this information to you. Possibly your IMAP server
is buggy. You can look at the protocol trace to see what the IMAP
server is returning, and if it's missing information that should be there,
report a bug to your IMAP server vendor.
Your program might need to work around this problem by deciding
that any body part with a filename is an attachment, or any part
after the first is an attachment.