Reading mails from Hmail Server

Question

hi all,
I am using an java mail api to read mails from a hmail server.I was successfull in reading mails and analysing it further but the problem that i face is my program could read only the recent mails ,all the remaining unread mails were not accessible from the java code.......i am attaching my code...
package mail.hmailserver;
import java.io.*;
import java.util.*;
import javax.mail.*;
public class ReadMail_frm_hmailserver {
     int c=0;
@SuppressWarnings("unchecked")
public static void main(String args[]) throws Exception {
ReadMail_frm_hmailserver mailObj=new ReadMail_frm_hmailserver();
mailObj.readMails();
public Vector[] readMails() throws Exception
     String host = "172.29.19.78";
String user = "[email protected]";
String password = "testuser1";
// Get system properties
Properties properties = System.getProperties();
// Get the default Session object.
Session session = Session.getDefaultInstance(properties,null);
// Get a Store object that implements the specified protocol.
Store store = session.getStore("pop3");
//Connect to the current host using the specified username and password.
store.connect(host, user, password);
//Create a Folder object corresponding to the given name.
Folder folder = store.getFolder("inbox");
// Open the Folder.
folder.open(Folder.READ_ONLY);
//folder.open(Folder.READ_WRITE);
Message[] message = folder.getMessages();
// String [] contents=new String[10];
Vector [] contents = new Vector[message.length];//creating array of vectors to store mails
// Vector contents1=new Vector();
System.out.println("No of mails : " + message.length);
System.out.println("subject 1 : "+message[0].getSentDate());
System.out.println("subject 2 : "+message[0].getSubject());
// System.out.println("subject 3 : "+message[2].getSubject());
// System.out.println("subject 4 : "+message[3].getSubject());
//System.out.println("-----------------");
// Display message.
for (int i = 0; i < message.length; i++) {
          c=0;
          contents[i] = new Vector(); //since vector array is an array of arrays we hav to initilize each of the content vectors
System.out.println("------------ Message " + (i + 1) + " ------------");
System.out.println("SentDate : " + message.getSentDate());
System.out.println("From : " + message[i].getFrom()[0]);
System.out.println("Subject : " + message[i].getSubject());
System.out.print("Message : ");
//System.out.println(message[i].getContent());
Multipart multipart = (Multipart) message[i].getContent();
//System.out.println(multipart.getCount());
String line = null;
for (int j = 0; j < multipart.getCount(); j++) {
//System.out.println(i);
//System.out.println(multipart.getContentType());
BodyPart bodyPart = multipart.getBodyPart(j);
InputStream stream = bodyPart.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(stream));
while (br.ready()) {         
     try {
                              //line.append(br.readLine());
          //line=line+"\n"+br.readLine();
          line=br.readLine();
          if(line.equals("NOTICE")){
                    System.out.println("entered-----------------------------exit loop");
                    //exit();
                    c++;
                    break;
          if(c==0)
          contents[i].add(line); //adding the mails line by line to the array
                         System.out.println(line);
          //System.out.println(contents[i].get(j));
     } catch (Exception e) {
                              // TODO Auto-generated catch block
                              e.printStackTrace();
                              System.out.println("Exception : "+e);
     //contents[1].add(line);
System.out.println();
//System.out.println(line);
// contents[i].add(line); //adding the mails line by line to the array
System.out.println();
// folder.close(true);
//store.close();
//System.out.println(contents.length);
//System.out.println(contents[0].get(0));
//System.out.println(contents[0].);
return contents;

Answer 1

You might want to use IMAP to read mail from hMail Server, if you keep messages on server. It has a lot more features for managing messages on server.
A lot of POP3 implementations (both client and server side) will automatically delete retrieved messages. I don't know exactly what JavaMail does in that regard, nor of hMailServer, but I do know some mailservers out in the wild will ALWAYS delete mails retrieved with POP3.