Listing attachment without downloading it using javamail api

I am developing a java mail client using javamail api. I need to fetch the list of attachment without fetching it. First i will display the list of attachments and than on click of a particular attachment, i will fetch the data. Currently i am able to fetch the name of all attachments but it is taking too long time since i think my code is also fetching the attachment data. My code is as below

private void getAttachmentList(Part part, List list) throws Exception{
    Object content = part.getContent();
    if(content instanceof Multipart){
        Multipart multiPart = (Multipart)content;
        int no_of_part = multiPart.getCount();

        for(int i=0; i<no_of_part; i++){
            getAttachmentList(multiPart.getBodyPart(i), list);
        }
    }else{
        String disposition = part.getDisposition();

        if (disposition != null && disposition.equalsIgnoreCase(Part.ATTACHMENT)) {
            String fileName = part.getFileName();
            if(fileName != null){
                list.add(fileName);
            }
        } 

    }
}

I have tested this code with my gmail开发者_如何学JAVA account and it is taking lots of time if my mail is having huge attachments. Any help is appreciated. Thanks in advance

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Do this app use POP, or IMAP?

If it uses POP, modify it to use IMAP. The latter may conceivably be quicker as it only downloads headers.