import java.util.Arrays;
import java.util.Properties;

import javax.mail.FetchProfile;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Store;

public class MailReader {

  public static void main(String[] args) {

		String host = "pop.gmail.com";// change accordingly
		String mailStoreType = "pop3";
		String username = "";// change accordingly
		String password = "";// change accordingly

		check(host, mailStoreType, username, password);

	}

	public static void check(String host, String storeType, String user, String password) {
		try {

			// create properties field
			Properties properties = new Properties();

			properties.put("mail.pop3.host", host);
			properties.put("mail.pop3.port", "995");
			properties.put("mail.pop3.starttls.enable", "true");
			Session emailSession = Session.getDefaultInstance(properties);

			// create the POP3 store object and connect with the pop server
			Store store = emailSession.getStore("pop3s");

			store.connect(host, user, password);

			// create the folder object and open it
			Folder emailFolder = store.getFolder("INBOX");
			emailFolder.open(Folder.READ_ONLY);

			// retrieve the messages from the folder in an array and print it
			//Message[] messages = emailFolder.getMessages();

		    Message[] messages = emailFolder.getMessages();
		    FetchProfile fp = new FetchProfile();
            fp.add(FetchProfile.Item.ENVELOPE);
            emailFolder.fetch(messages, fp);
		   //messages = emailFolder.search(new FlagTerm(new Flags(Flags.Flag.SEEN), false));
		    // Sort messages from recent to oldest
		    Arrays.sort( messages, ( m1, m2 ) -> {
		      try {
		        return m2.getSentDate().compareTo( m1.getSentDate() );
		      } catch ( MessagingException e ) {
		        throw new RuntimeException( e );
		      }
		    } );

		    for ( Message message : messages ) {
		      System.out.println(
		          "sendDate: " + message.getSentDate()
		          + " subject:" + message.getSubject() );
		    }
			/*for (int i = 0, n = messages.length; i < n; i++) {
				Message message = messages[i];
				System.out.println("---------------------------------");
				System.out.println("Email Number " + (i + 1));
				System.out.println("Subject: " + message.getSubject());
				System.out.println("From: " + message.getFrom()[0]);
				System.out.println("Text: " + message.getContent().toString());
			}*/

			// close the store and folder objects
			emailFolder.close(false);
			store.close();

		} catch (NoSuchProviderException e) {
			e.printStackTrace();
		} catch (MessagingException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}