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Java Mail POP3Client Example

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This Example shows you how to POP3Client using javamail api. All messages are stored in Folder objects.

Java Mail POP3Client Example

     

This Example shows you how to POP3Client using javamail api. All messages are stored in Folder objects. folders can contain folders or messages. The Folder class declares methods that fetch, append, copy and delete messages. These are some of the methods used in the program.

System.getProperties() this method get the  system properties.
Session.getDefaultInstance(properties) this method get the default Session object.
session.getStore("pop3") this method get a Store object that implements the pop3 protocol.
store.connect(host, user, password) Connect to the current host using the specified username and password.
store.getFolder("inbox") create a Folder object of the inbox.
folder.open(Folder.READ_ONLY) open the Folder.

folder.getMessages() get all messages for the folde.

POP3Clint.java


import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;

public class POP3Clint {

  public static void main(String[] args) throws Exception {

  String host = "192.168.10.205";
  String user = "test";
  String password = "test";

  // Get system properties
  Properties properties = System.getProperties();

  // Get the default Session object.
  Session session = Session.getDefaultInstance(properties);

  // 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);

  // Get the messages from the server
  Message[] messages = folder.getMessages();

  // Display message.
  for (int i = 0; i < messages.length; i++) {
  System.out.println("------------ Message " + (i + 1) + " ------------");
  // Here's the big change...
  String from = InternetAddress.toString(messages[i].getFrom());
  if (from != null) {
  System.out.println("From: " + from);
  }
  String replyTo = InternetAddress.toString(
  messages[i].getReplyTo());
  if (replyTo != null) {
  System.out.println("Reply-to: " + replyTo);
  }
  String to = InternetAddress.toString(
  messages[i].getRecipients(Message.RecipientType.TO));
  if (to != null) {
  System.out.println("To: " + to);
  }
  String cc = InternetAddress.toString(
  messages[i].getRecipients(Message.RecipientType.CC));
  if (cc != null) {
  System.out.println("Cc: " + cc);
  }
  String bcc = InternetAddress.toString(
  messages[i].getRecipients(Message.RecipientType.BCC));
  if (bcc != null) {
  System.out.println("Bcc: " + to);
  }
  String subject = messages[i].getSubject();
  if (subject != null) {
  System.out.println("Subject: " + subject);
  }
  Date sent = messages[i].getSentDate();
  if (sent != null) {
  System.out.println("Sent: " + sent);
  }
  Date received = messages[i].getReceivedDate();
  if (received != null) {
  System.out.println("Received: " + received);
  }
  System.out.println();
  }

  folder.close(true);
  store.close();
  }
} 

Output:

------------ Message 1 ------------
From: test@localhost
Reply-to: test@localhost
To: test@localhost
Subject: hi..!
Sent: Tue Jul 15 18:44:41 IST 2008

 ------------ Message 2 ------------
From: test <test@localhost>
Reply-to: test <test@localhost>
To: test@localhost
Subject: Resistance is futile.
Sent: Tue Jul 15 17:57:32 IST 2008 

------------ Message 3 ------------
From: test
Reply-to: test
To: test@localhost
Subject: hi whts goig on ..!
Sent: Tue Jul 15 17:26:47 IST 2008 

------------ Message 4 ------------
From: test@localhost
Reply-to: test@localhost
To: test@localhost
Subject: hi..!
Sent: Mon Jul 14 21:54:28 IST 2008

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Posted on: December 19, 2008

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Comments:1
Moh
February 26, 2012
Can't Access SENT folder

I need your help please, i want to delete all emails from sent folder. i have succesfully deleted emails in inbox but I can't Access SENT folder
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