retrieving mails to jtextarea in java takes much time

import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
import javax.mail.*;

public class TextAreaDemoB extends JFrame 
{
JTextArea _resultArea = new JTextArea(6, 35);
      public TextAreaDemoB() throws Exception
        {
      String host = "pop.gmail.com";
      String user = "computingcloud14@gmail.com";
      String password = "QWERTYASDFG";
      Properties properties = System.getProperties();
        Session session = Session.getDefaultInstance(properties, null);
        Store store = session.getStore("pop3s");
        store.connect(host, user, password);
        Folder folder = store.getFolder("inbox");

        folder.open(Folder.READ_ONLY);
        Message[] message = folder.getMessages();

        

        
      for (int i = 0; i < message.length; i++)
      {
         String myString = Integer.toString(i);
          _resultArea.append(myString);
          _resultArea.append("------------ Message " + (i + 1) + " ------------");
          _resultArea.append("SentDate : " + message[i].getSentDate());
          _resultArea.append("From : " + message[i].getFrom()[0]);
         _resultArea.append("Subject : " + message[i].getSubject());
           InputStream stream = message[i].getInputStream();
       //The following loop must be changed to achieve my solution.can any1???????
           do
           {
               //_resultArea.setText(();
            char d=(char) stream.read();
            String c=Character.toString(d);
            _resultArea.append(c);
           
            }
           while (stream.available() != 0);
      

           
      }
        JScrollPane scrollingArea = new JScrollPane(_resultArea);
        JPanel content = new JPanel();
        content.setLayout(new BorderLayout());
        content.add(scrollingArea, BorderLayout.CENTER);
        this.setContentPane(content);
        this.setTitle("TReadMails");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.pack();
    }
    
    //============================================================= main
    public static void main(String[] args) throws Exception
    {
        JFrame win = new TextAreaDemoB();
        win.setVisible(true);
    }
}