Techie Zone

import javax.mail.AuthenticationFailedException;
import javax.mail.Folder;
import javax.mail.FolderClosedException;
import javax.mail.FolderNotFoundException;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.Part;
import javax.mail.ReadOnlyFolderException;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.StoreClosedException;
import javax.mail.internet.InternetAddress;
 
public class readEmails {
 
//Constructor Call
public readEmails() {
   processMail();
}
 
//Responsible for printing Data to Console
private void printData(String data) {
   System.out.println(data);
}
 
public void processMail() {
   Session session = null;
   Store store = null;
   Folder folder = null;
   Message message = null;
   Message[] messages = null;
   Object messagecontentObject = null;
   String sender = null;
   String subject = null;
   Multipart multipart = null;
   Part part = null;
   String contentType = null;
 
   try {
      printData("--------------processing mails started-----------------");
      session = Session.getDefaultInstance(System.getProperties(), null);
 
      printData("getting the session for accessing email.");
      store = session.getStore("pop3");
 
      store.connect("host Name OR IP","username","password");
      printData("Connection established with POP3 server.");
 
      // Get a handle on the default folder
      folder = store.getDefaultFolder();
 
      printData("Getting the Inbox folder.");
 
      // Retrieve the "Inbox"
      folder = folder.getFolder("inbox");
 
      //Reading the Email Index in Read / Write Mode
      folder.open(Folder.READ_WRITE);
 
      // Retrieve the messages
      messages = folder.getMessages();
 
      // Loop over all of the messages
      for (int messageNumber = 0; messageNumber < messages.length; messageNumber++) {
           // Retrieve the next message to be read
	   message = messages[messageNumber];
 
           // Retrieve the message content
           messagecontentObject = message.getContent();
 
           // Determine email type
           if (messagecontentObject instanceof Multipart) {
               printData("Found Email with Attachment");
               sender = ((InternetAddress) message.getFrom()[0]).getPersonal();
 
               // If the "personal" information has no entry, check the address for the sender information
               printData("If the personal information has no entry, check the address for the sender information.");
 
	       if (sender == null) {
	 	   sender = ((InternetAddress) message.getFrom()[0]).getAddress();
		   printData("sender in NULL. Printing Address:" + sender);
	       }
               printData("Sender -." + sender);
 
               // Get the subject information
               subject = message.getSubject();
 
               printData("subject=" + subject);
 
               // Retrieve the Multipart object from the message
               multipart = (Multipart) message.getContent();
 
               printData("Retrieve the Multipart object from the message");
 
               // Loop over the parts of the email
               for (int i = 0; i < multipart.getCount(); i++) {
                    // Retrieve the next part
                    part = multipart.getBodyPart(i);
 
                    // Get the content type
                    contentType = part.getContentType();
 
                   // Display the content type
		   printData("Content: " + contentType);
 
                   if (contentType.startsWith("text/plain")) {
			printData("---------reading content type text/plain  mail -------------");
		   } else {
			// Retrieve the file name
			String fileName = part.getFileName();
			printData("retrive the fileName="+ fileName);
		   }
	      }
	   } else {
	      printData("Found Mail Without Attachment");
	      sender = ((InternetAddress) message.getFrom()[0]).getPersonal();
 
              // If the "personal" information has no entry, check the address for the sender information
	      printData("If the personal information has no entry, check the address for the sender information.");
 
              if (sender == null) {
		sender = ((InternetAddress) message.getFrom()[0]).getAddress();
		printData("sender in NULL. Printing Address:" + sender);
	     }
 
             // Get the subject information
	     subject = message.getSubject();
	     printData("subject=" + subject);
	 }
      }
 
      // Close the folder
      folder.close(true);
 
      // Close the message store
      store.close();
  } catch(AuthenticationFailedException e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  } catch(FolderClosedException e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  } catch(FolderNotFoundException e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  }  catch(NoSuchProviderException e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  } catch(ReadOnlyFolderException e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  } catch(StoreClosedException e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  } catch (Exception e) {
     printData("Not able to process the mail reading.");
     e.printStackTrace();
  }
}
 
//Main  Function for The readEmail Class
public static void main(String args[]) {
    //Creating new readEmail Object
    readEmails readMail = new readEmails();
 
    //Calling processMail Function to read from POP3 Account
    readMail.processMail();
}
 
}