[Envoi de sms]Défi PHP / Java

package projet1;

import java.net.Socket;
import java.io.OutputStreamWriter;
import java.io.BufferedReader;
import java.net.URLEncoder;
import java.net.URLConnection;
import java.net.URL;
import java.io.InputStreamReader;

/* Certaines parties du code sont inspirées d'un exemple donné sur le forum de développez.com */
public class SMS {
    public static void doPost(String adresse) {
        OutputStreamWriter writer = null;
        BufferedReader reader = null;
        try {
            //encodage des paramètres de la requête
            String donnees = URLEncoder.encode("message", "UTF-8") + "="
                    + URLEncoder.encode("MONMESSAGE", "UTF-8");
            donnees += "&" + URLEncoder.encode("recipient", "UTF-8") + "="
                    + URLEncoder.encode("0032(monnumero)", "UTF-8");
            donnees += "&" + URLEncoder.encode("sendSMS", "UTF-8") + "="
                    + URLEncoder.encode("true", "UTF-8");
            donnees += "&" + URLEncoder.encode("remLen", "UTF-8") + "="
                    + URLEncoder.encode("150", "UTF-8");
            donnees += "&" + URLEncoder.encode("submit", "UTF-8") + "="
                    + URLEncoder.encode("submit", "UTF-8");
            //création de la connection
            URL url = new URL(adresse);
            URLConnection conn = url.openConnection();
            conn.setDoOutput(true);

            //envoi de la requête
            writer = new OutputStreamWriter(conn.getOutputStream());
            writer.write(donnees);
            writer.flush();

            //lecture de la réponse
            reader = new BufferedReader(new InputStreamReader(conn
                    .getInputStream()));
            String ligne;
            while ((ligne = reader.readLine()) != null) {
                System.out.println(ligne);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                writer.close();
            } catch (Exception e) {
            }
            try {
                reader.close();
            } catch (Exception e) {
            }
        }
    }

    public static void main(String[] args) {
        doPost("http://smslisto.com/demosms/senddemosms.php");
    }
}