import java.util.*;
import java.io.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

class Authenticator
{

public PasswordAuthentication
getPasswordAuthentication()
{
return new PasswordAuthentication("userid", "password");
}
}


public class sms
{
public static void main(String[] args)
throws Exception {


String messageBody = "testing 123";

int x;

String strEmailAddress = "userid@yahoo.com"; String strSmtpServer = "smtp.mail.yahoo.com";

String to = strEmailAddress;
String from ="userid@yahoo.com";
String host = strSmtpServer;

Properties props = new Properties();
props.put("mail.smtp.host", host);

Authenticator auth = new Authenticator();

Session session = Session.getDefaultInstance(props,auth);

Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(from));
InternetAddress[] address = {new InternetAddress(to)};
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject("i miss u");
msg.setSentDate(new java.util.Date());
msg.setText(messageBody );
Transport.send(msg);
}
}

my problem

i get an error
cannot resolve symbol
symbol : method getDefaultInstance (java.util.Properties,Authenticator)
location: class javax.mail.Session
Session session = Session.getDefaultInstance(props,auth);


how to i authenticate my user id when i wan to send my mail?? i really need help here...thanks