Use JavaMail API to reveive all Google mails

package com.tutego.insel.mail;

import java.util.*;
import javax.mail.*;
import javax.mail.internet.ContentType;
import javax.swing.JOptionPane;

public class GetEMails
{
 public static void getMail( final Properties props ) throws Exception
 {
   Session session = Session.getInstance( props, new javax.mail.Authenticator() {
         protected PasswordAuthentication getPasswordAuthentication() {
           return new PasswordAuthentication( props.getProperty( "mail.pop3.user" ),
                                              props.getProperty( "mail.pop3.password" ) );
         }
       } );
   session.setDebug( true );

   Store store = session.getStore( "pop3" );
   store.connect();

   Folder folder = store.getFolder( "INBOX" );
   folder.open( Folder.READ_ONLY );

   Message message[] = folder.getMessages();

   for ( int i = 0; i < message.length; i++ )
   {
     Message m = message[i];

     System.out.println( "-------------------------\nNachricht: " + i );
     System.out.println( "Von: " + Arrays.toString(m.getFrom()) );
     System.out.println( "Betreff: " + m.getSubject() );
     System.out.println( "Gesendet am: " + m.getSentDate() );
     System.out.println( "Content-Type: " + new ContentType(m.getContentType()) );

     if ( m.isMimeType("text/plain") )
       System.out.println( m.getContent() );
   }
   folder.close( false );
   store.close();
 }

 public static void main( String[] args ) throws Exception
 {
   Properties props = new Properties();
   props.setProperty( "mail.pop3.host", "pop.gmail.com" );
   props.setProperty( "mail.pop3.user", JOptionPane.showInputDialog( "user" ) );
   props.setProperty( "mail.pop3.password", JOptionPane.showInputDialog( "pass" ) );
   props.setProperty( "mail.pop3.port", "995" );
   props.setProperty( "mail.pop3.auth", "true" );
   props.setProperty( "mail.pop3.socketFactory.class", "javax.net.ssl.SSLSocketFactory" );

   getMail( props );
 }
}