EmailSender.java

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 * and open the template in the editor.
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package gradeapp;

// Imports
import java.awt.BorderLayout;
import java.awt.Container;
import java.io.File;
import javax.swing.JOptionPane;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import javax.swing.JFrame;
import javax.swing.JProgressBar;

/**
 *  Responsible for sending out the email.
 *   Most of Code Ripped From:
 *   http://www.java-tips.org/other-api-tips/javamail/how-to-send-an-email-with-a-file-attachment.html
 *
 * @author DiFiore
 */
public class EmailSender {

/**
 * Email Is Sent From GMail Account with an attached file.
 * Obtains the user's email address through a dialog box.
 * Doesnt Return Anything. Asks The User For Email Address To
 * Send Email To. Gets The Temp File From Temp File Function. Tmp 
 * File Is Rendered Graph. Email Is Sent From GMail Account. The Hosts
 * Are Set Up. The Email Title And Subject With Attachment Is Created.
 * The Account Is Logged Into And The Email is Sent. A Progress Bar Will Show
 * Progress And A Message Will Pop Up For Errors If An Error Occurs. A 
 * Confirmation Message Is Outputted If All Goes Well.
 * @param tmpFile The file to send 
 */
public static void sentEmail(File tmpFile){

  // Ask For Email Input
  String to = JOptionPane.showInputDialog("Input Email Address To Send File.", "desktopgradeapp@gmail.com");

  // Handles Cancel And Exit Button On Input Box
  if (to == null)
        return;

  // Sending Address And Host
  String from = "desktopgradeapp@gmail.com";
  String host = "smtp.gmail.com";

  //OO takes all fun out of programming
  //String filename = "gayjava.txt";
  //Message Of Email
  String msgText1 = "See Attachment For Grade Graph.\nDo Not Reply To This Email.\n";
  String subject = "Grade Graph Results";

  // Make New Frame For Bar
  JFrame jfrProgress = new JFrame("Emailing File In Progress...");
  Container contentPane = jfrProgress.getContentPane();
  //SpringLayout layout = new SpringLayout();
  contentPane.setLayout(null);
  jfrProgress.setLocation(420,350);
  jfrProgress.setSize(600,90);
  jfrProgress.setVisible(true);
  
  // Tries To Make Bar Close On Exit But Bar Sometimes Too Fast
  jfrProgress.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  // Bar Progress Counter
  int progress = 100;

  // Make Bar
  JProgressBar progressBar = new JProgressBar(0, progress);
  String doing = "Step 1 - Setting Hosts.";
  jfrProgress.getContentPane().add(progressBar,BorderLayout.CENTER);
  progressBar.setValue(0);
  progressBar.setStringPainted(true);
  progressBar.setString(doing);
  
  progressBar.setSize(600, 60);
  progressBar.setVisible(true);
  progressBar.setValue(0);
  progressBar.setStringPainted(true);
  progressBar.paintImmediately(0,0,jfrProgress.getWidth(),jfrProgress.getHeight());

  // Create some properties and get the default Session
  Properties props = System.getProperties();
  props.put("mail.smtps.host", host);
  props.put("mail.smtps.auth", "true");
  // If 25 no work try 587 or 465
  props.put("mail.smtp.port", "25");
  Session session = Session.getInstance(props, null);

  // Fen BootLeg Java Wait 
  // Needed For Gay Progress Bar Cosmetic Look
  // Else User Says WTF
  for (int i = 0; i < 1500000000; i++)
  {
      ;
  }

  // Progress ++;
  progressBar.setValue(33);
  doing = "Step 2 - Creating Email.";
  progressBar.setString(doing);
  progressBar.paintImmediately(0,0,jfrProgress.getWidth(),jfrProgress.getHeight());

  try
  {
      // Create a message
      MimeMessage msg = new MimeMessage(session);
      msg.setFrom(new InternetAddress(from));
      InternetAddress[] address = {new InternetAddress(to)};
      msg.setRecipients(Message.RecipientType.TO, address);
      msg.setSubject(subject);

      // Create and fill the first message part
      MimeBodyPart mbp1 = new MimeBodyPart();
      mbp1.setText(msgText1);

      // Create the second message part
      MimeBodyPart mbp2 = new MimeBodyPart();

      // Attach the file to the message
      FileDataSource fds = new FileDataSource(tmpFile);
      mbp2.setDataHandler(new DataHandler(fds));
      mbp2.setFileName(fds.getName());

      // Create the Multipart and add its parts to it
      Multipart mp = new MimeMultipart();
      mp.addBodyPart(mbp1);
      mp.addBodyPart(mbp2);

      // Add the Multipart to the message
      msg.setContent(mp);

      // Set the Date: header
      msg.setSentDate(new Date());

      // Fen BootLeg Java Wait
      // Needed For Gay Progress Bar Cosmetic Look
      // Else User Says WTF
      for (int i = 0; i < 1500000000; i++)
      {
        ;
      }

      // Progress ++;
      progressBar.setValue(66);
      doing = "Step 3 - Connecting To Internet And Sending Email.";
      progressBar.setString(doing);
      progressBar.paintImmediately(0,0,jfrProgress.getWidth(),jfrProgress.getHeight());

      // Since Gmail is gay, needs auth, optonline didnt hence 
      // Didnt need user/pwd
      // Connect is inhertied from serivce in gay java language
      // Needed instance for .connect function not static uggh
      Transport transport = session.getTransport("smtps");
      // SendMessage also not static, hence needing instance of transport to do work
      transport.connect(host, "desktopgradeapp", "ufaufaufa");
      transport.sendMessage(msg, msg.getAllRecipients());

       // Progress ++;
       progressBar.setValue(100);
       progressBar.paintImmediately(0,0,jfrProgress.getWidth(),jfrProgress.getHeight());

       //Close
       jfrProgress.dispose();

       JOptionPane.showMessageDialog(null, "Email sucessfully sent. Check your inbox!");

  }
  catch (MessagingException mex)
  {
      
      String error;
      error = mex.getMessage();
      System.out.println(error);
      jfrProgress.dispose();
      JOptionPane.showMessageDialog(null, "Dear User,\nAn Error Occured During:\n" + doing + "\nYour Email Could Not Be Sent.\nCheck Help Menu For Possible Solutions.\n" + "Sincerely,\nHacker.\n");
      Exception ex = null;
      if ((ex = mex.getNextException()) != null) {
        ex.printStackTrace();
      }
  }
 
}

}