¿como enviar un correo con java ?

[ajmb]

me lanza un error aqui no se que sera "package com.mkyong.common;"

y luego al correrlo me dice " no main classes found " =(

y ya le puse la libreria javamail y JAF (activation.jar)

Código Javascript:

package com.mkyong.common; 
import java.util.Properties;
 
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
 
public class sendmailtls {
 
    public static void main(String[] args) {
 
        final String username = "[email protected]";
        final String password = "password";
 
        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.port", "587");
 
        Session session = Session.getInstance(props,
          new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
          });
 
        try {
 
            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress("[email protected]"));
            message.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse("[email protected]"));
            message.setSubject("Testing Subject");
            message.setText("Dear Mail Crawler,"
                + "\n\n No spam to my email, please!");
 
            Transport.send(message);
 
            System.out.println("Done");
 
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}