A program that can send mails. This requires that you have activation.jar and mail.jar in you classpath.

/*
to run this example u may require activation.jar and mail.jar in ur classpath
*/

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import javax.activation.*;
import java.io.*;
public class SimpleSender
{
  	public static void main(String args[])
  	{
    		try
    		{
      			String smtpServer=args[0];
      			String to=args[1];
      			String from=args[2];
      			String body=args[3];
      			send(smtpServer, to, from,body);
    		}
    		catch (Exception ex)
    		{
      		System.out.println("Usage :\njava SimpleSender server to from body");
    		}
   	System.exit(0);
  	}

	public static void send(String smtpServer, String to, String from, String body)
  	{
   		try
    		{
      		Properties props = System.getProperties();
      		props.put("mail.smtp.host", smtpServer);
      		Session session = Session.getDefaultInstance(props, null);
      		MimeMessage msg = new MimeMessage(session);
      		msg.setFrom(new InternetAddress(from));
      		msg.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to, false));
      		msg.setSubject("Test Mail thru java");
			msg.setContent(body,"text/plain");
      		msg.setSentDate(new Date());
      		Transport.send(msg);
      		System.out.println("Message sent OK.");
    	}
    	catch (Exception ex)
    	{
      		ex.printStackTrace();
    	}
}


}