import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Iterator;
import java.util.Vector;

public class SMS 
{
public static void send(String uid, String pwd, String phone, String msg)  throws Exception 
{
    if ((uid == null) || (uid.length() == 0)) 
    {
        throw new IllegalArgumentException("User ID should be present.");
    }

    uid = URLEncoder.encode(uid, "UTF-8");

    if ((pwd == null) || (pwd.length() == 0)) 
    {
        throw new IllegalArgumentException("Password should be present.");
    }
    pwd = URLEncoder.encode(pwd, "UTF-8");

    if ((phone == null) || (phone.length() == 0)) 
    {
        throw new IllegalArgumentException("At least one phone number should be present.");
    }
    if ((msg == null) || (msg.length() == 0)) 
    {
        throw new IllegalArgumentException("SMS message should be present.");
    }
    msg = URLEncoder.encode(msg, "UTF-8");

    Vector numbers = new Vector();

    if (phone.indexOf(59) >= 0) 
    {
        String[] pharr = phone.split(";");
        for (String t : pharr)
        try 
        {
            numbers.add(Long.valueOf(t));
        }
        catch (NumberFormatException ex) 
        {
            throw new IllegalArgumentException("Give proper phone numbers.");
        }
    } 
    else 
    {
    try 
    {
        numbers.add(Long.valueOf(phone));
    } 
    catch (NumberFormatException ex) 
    {
        throw new IllegalArgumentException("Give proper phone numbers.");
    }
    }

    if (numbers.size() == 0) 
    {
        throw new IllegalArgumentException("At least one proper phone number should be present to send SMS.");
    }
    String temp = "";
    String content = "username=" + uid + "&password=" + pwd;
    URL u = new URL("http://www.way2sms.com/auth.cl");
    HttpURLConnection uc = (HttpURLConnection) u.openConnection();
    uc.setDoOutput(true);
    uc.setRequestProperty("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5");
    uc.setRequestProperty("Content-Length", String.valueOf(content.length()));
    uc.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
    uc.setRequestProperty("Accept", "*/*");
    uc.setRequestProperty("Referer", "http://www.way2sms.com//entry.jsp");
    uc.setRequestMethod("POST");
    uc.setInstanceFollowRedirects(false);

    PrintWriter pw = new PrintWriter(new OutputStreamWriter(uc.getOutputStream()), true);   
    pw.print(content);
    pw.flush();
    pw.close();
    BufferedReader br = new BufferedReader(new InputStreamReader(uc.getInputStream()));

    while ((temp = br.readLine()) != null) 
    {
        System.out.println(temp);
    }

    String cookie = uc.getHeaderField("Set-Cookie");

    u = null;
    uc = null;
    for (Iterator localIterator = numbers.iterator();localIterator.hasNext();) 
    {
    long num = ((Long) localIterator.next()).longValue();

    content = "custid=undefined&HiddenAction=instantsms&Action=custfrom450000&login=&pass=&MobNo="+ num+ "&textArea="+ msg;
u = new URL("http://www.way2sms.com/FirstServletsms?custid=");
    uc = (HttpURLConnection) u.openConnection();
    uc.setDoOutput(true);
    uc.setRequestProperty("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5");
    uc.setRequestProperty("Content-Length", String.valueOf(content.getBytes().length));
    uc.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
    uc.setRequestProperty("Accept", "*/*");
    uc.setRequestProperty("Cookie", cookie);
    uc.setRequestMethod("POST");
    uc.setInstanceFollowRedirects(false);
    pw = new PrintWriter(new OutputStreamWriter(uc.getOutputStream()),true);
    pw.print(content);
    pw.flush();
    pw.close();
    br = new BufferedReader(new InputStreamReader(uc.getInputStream()));
    while ((temp = br.readLine()) != null);
    br.close();
    u = null;
    uc = null;
}

u = new URL("http://wwwa.way2sms.com/jsp/logout.jsp");
uc = (HttpURLConnection) u.openConnection();
uc.setRequestProperty("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5");
uc.setRequestProperty("Accept", "*/*");
uc.setRequestProperty("Cookie", cookie);
uc.setRequestMethod("GET");
uc.setInstanceFollowRedirects(false);
br = new BufferedReader(new InputStreamReader(uc.getInputStream()));
while ((temp = br.readLine()) != null);
br.close();
u = null;
uc = null;
}
public static void main(String args[]) throws Exception
{
    SMS s=new SMS();
    SMS.send("9028192951","Sujay021991","9028192951","Hi How Are u !!");

}

}

I am Using This code to send SMS from PC to Mobile Phone But This code is throwing Following Exception.

***Exception in thread "main" java.io.IOException: Server returned HTTP response co
de: 400 for URL: http://www.way2sms.com/FirstServletsms?custid=
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
nection.java:1612)
        at SMS.send(SMS.java:117)
        at SMS.main(SMS.java:140)***

//Please any one tell me the solution for this.
//Your suggestions are always welcome.