How To Send Text Messages Using Java Program

Prerequirements: 
Mail.jar from JavaMail (You can download it fromhttp://java.sun.com/products/javamail/downloads/index.html) 
Activation.jar (You can download it fromhttp://java.sun.com/products/javabeans/jaf/downloads/index.html) 
Smtp.jar(You can download it fromhttp://www.java2s.com/Code/Jar/s/Downloadsmtpjar.html)
An account needs to be created at www.ipipi.com 

After creating your account and finishing the downloading part add the jars to the classpath.

import java.io.*;
import java.net.InetAddress;
import java.util.Properties;
import java.util.Date;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

public class SMTPSend {

    public SMTPSend() {
    }

    public void msgsend() {
        String username = "YoureIPIPIUsername";
        String password = "YourPassword";
        String smtphost = "ipipi.com";
        String compression = "Compression Option goes here - find out more";
        String from = "YoureIPIPIUsername@ipipi.com";
        String to = "DestinationPhoneNumber@sms.ipipi.com";
        String body = "Your Message";
        Transport tr = null;

        try {
         Properties props = System.getProperties();
         props.put("mail.smtp.auth", "true");

         // Get a Session object
         Session mailSession = Session.getDefaultInstance(props, null);

         // construct the message
         Message msg = new MimeMessage(mailSession);

         //Set message attributes
         msg.setFrom(new InternetAddress(from));
         InternetAddress[] address = {new InternetAddress(to)};
         msg.setRecipients(Message.RecipientType.TO, address);
         msg.setSubject(compression);
         msg.setText(body);
         msg.setSentDate(new Date());

         tr = mailSession.getTransport("smtp");
         tr.connect(smtphost, username, password);
         msg.saveChanges();
         tr.sendMessage(msg, msg.getAllRecipients());
         tr.close();
         } catch (Exception e) {
             e.printStackTrace();
         }
    }

      public static void main(String[] argv) {
          SMTPSend smtpSend = new SMTPSend();
          smtpSend.msgsend();
      }
} 

Ref:

http://www.ipipi.com/help/send_text_message_using_java.htm

you can find a good alternative example here
https://code.google.com/p/send-sms-from-computer-to-mobile-using-way2sms/source/browse/Way2Sms.java