Can anybody tell me how to send a mail to group of person by using JavaMail?
I have tried but I am getting error at SendEmailToGroupDemo() and at start() method.
public class MailJava {
public static void main(String[] args) {
// Create a SendEmail object and call start
// method to send a mail in Java.
SendEmailToGroupDemo sendEmailToGroup = new SendEmailToGroupDemo();
sendEmailToGroup.start();
}
private void start() {
// For establishment of email client with
// Google's gmail use below properties.
// For TLS Connection use below properties
// Create a Properties object
Properties props = new Properties();
// these properties are required
// providing smtp auth property to true
props.put("mail.smtp.auth", "true");
// providing tls enability
props.put("mail.smtp.starttls.enable", "true");
// providing the smtp host i.e gmail.com
props.put("mail.smtp.host", "smtp.gmail.com");
// providing smtp port as 587
props.put("mail.smtp.port", "587");
// For SSL Connection use below properties
/*props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");*/
// Create Scanner object to take necessary
// values from the user.
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide your Username for Authentication ...");
final String Username = scanner.next();
System.out.println("Please provide your Password for Authentication ...");
final String Password = scanner.next();
System.out.println("Please provide Email Address from which you want to send Email ...");
final String fromEmailAddress = scanner.next();
System.out.println("Please provide Email Addresses to which you want to send Email ...");
System.out.println("If you are done type : Done or done");
// ArrayLists to store email addresses entered by user
ArrayList< String> emails = (ArrayList< String >) getEmails();
System.out.println("Please provide Subject for your Email ... ");
final String subject = scanner.next();
System.out.println("Please provide Text Message for your Email ... ");
final String textMessage = scanner.next();
// Create a Session object based on the properties and
// Authenticator object
Session session = Session.getDefaultInstance(props,
new LoginAuthenticator(Username,Password));
try {
// Create a Message object using the session created above
Message message = new MimeMessage(session);
// setting email address to Message from where message is being sent
message.setFrom(new InternetAddress(fromEmailAddress));
// setting the email addressess to which user wants to send message
message.setRecipients(Message.RecipientType.BCC, getEmailsList(emails));
// setting the subject for the email
message.setSubject(subject);
// setting the text message which user wants to send to recipients
message.setText(textMessage);
// Using the Transport class send() method to send message
Transport.send(message);
System.out.println("\nYour Message delivered successfully ....");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
// This method takes a list of email addresses and
// returns back an array of Address by looping the
// list one by one and storing it into Address[]
private Address[] getEmailsList(ArrayList< String > emails) {
Address[] emaiAddresses = new Address[emails.size()];
for (int i =0;i < emails.size();i++) {
try {
emaiAddresses[i] = new InternetAddress(emails.get(i));
}
catch (AddressException e) {
e.printStackTrace();
}
}
return emaiAddresses;
}
// This method prompts user for email group to which he
// wants to send message
public List< String > getEmails() {
ArrayList< String > emails = new ArrayList< String >();
int counter = 1;
String address = "";
Scanner scanner = new Scanner(System.in);
// looping inifinitely times as long as user enters
// emails one by one
// the while loop breaks when user types done and
// press enter.
while(true) {
System.out.println("Enter E-Mail : " + counter);
address = scanner.next();
if(address.equalsIgnoreCase("Done")){
break;
}
else {
emails.add(address);
counter++;
}
}
return emails;
}
}
// Creating a class for Username and Password authentication
// provided by the user.
class LoginAuthenticator extends Authenticator {
PasswordAuthentication authentication = null;
public LoginAuthenticator(String username, String password) {
authentication = new PasswordAuthentication(username,password);
}
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return authentication;
}
}
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