MailUtil.java

package org.karmaexchange.util;

import java.io.UnsupportedEncodingException;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import org.karmaexchange.dao.User;

public class MailUtil {

  public static void sendMail(User fromUser, User toUser,String subject, String body)
  {
    sendMail(fromUser.getPrimaryEmail(), getUserName(fromUser),
      toUser.getPrimaryEmail(), getUserName(toUser), subject, body);
  }

  private static void sendMail(String fromEmail, String fromName, String toEmail, String toName, String subject, String body)
  {
    Session session = Session.getDefaultInstance(null);

    try {
        Message msg = new MimeMessage(session);
        msg.setFrom(new InternetAddress(fromEmail, fromName));
        msg.addRecipient(Message.RecipientType.TO,
         new InternetAddress(toEmail, toName));
        msg.setSubject(subject);
        msg.setText(body);
        Transport.send(msg);

    } catch (AddressException e) {
        // ...
    } catch (MessagingException e) {
        // ...
    } catch (UnsupportedEncodingException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }

  private static String getUserName(User user) {
    return user.getFirstName() + " " + user.getLastName();
  }

}