Re: javamail and mbox

"Raymond Kososki" <>
Wed, 07 Feb 2007 03:43:07 GMT
Many thanks Martin! I downloaded mstor and with the little program below
was able to successfully browse through my emails. the jars mbox.jar,
activation.jar and mail.jar are needed. This code runs on my sun box, which
is running SunOS 5.9. I am off and running - thanks!

import java.util.*;
import javax.mail.*;
public class Mstor {
    public static void main(String[] args) {
        Session session = Session.getDefaultInstance(new Properties());
        try {
            Store store = session.getStore(new URLName("mstor:/var/mail"));
            // read messages from Inbox..
            Folder inbox = store.getDefaultFolder().getFolder("user01");
            Message[] messages = inbox.getMessages();
            try {
                for (int i=0, n=messages.length; i<n; i++){
                    System.out.println(i + ": " + messages[i].getFrom()[0] +
"\t" + messages[i].getSubject());
            } catch (IOException ioe) {
            inbox.close(false); // expunges all deleted messages if this
flag is true
        } catch (MessagingException me) {

"Martin Gregorie" <martin@no.known.address> wrote in message

Raymond Kososki wrote:

well - i have found some documentation from sun that there are third
party products which allow one to used the javamail api with mbox. i've
tried a few with no luck yet. i can get as far as reading the mail when
it throws an 'unable to lock file' exception. i thought somebody out in
the community might know of a product so that i could use the javamail
api instead of having to write some kind of mailbox class myself -
probably using the commons lib - which it is looking like i'm going to
have to do ...

mstor (which I found through the JavaMail third party products works just
fine. Here's how I make the connection:

1)get a Session instance
2)get a store instance:
Store store session.getStore(new URLName("mstor:" + directory));

  where "directory" is the pathname of the directory containing
  the mbox file.
3)now open the folder:
Folder folder = store.getDefaultFolder();
folder = folder.getFolder(mbox);;

  where "mbox" contains the name of the mbox file. Of course, this just
  shows the method calling sequence that works for me. Many of these
  methods throw exceptions. I leave exception handling as an exercise
  for you because your program structure will probably not match mine.

I started by modifying the JavaMail mail reading example, but have since
rearranged it into a set of classes: the code I'm quoted from is in my
InputQueue class which hides the Store and Folder instants from the rest
of the application. InputQueue can read messages from mbox and from
servers via any of the standard connection protocols. Apart from a
constructor that reads system properties and sets up debug tracing, the
methods are:

I still have to add a method for deleting messages (not for use with mstor
in my application).


martin@ | Martin Gregorie
gregorie. | Essex, UK
org |

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