Script Mengirim SMS pada JAVA (J2ME)

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.wireless.messaging.*;
import javax.microedition.io.*;
import java.io.*;

public class KirimSMS extends MIDlet
  implements CommandListener, Runnable {
   
  private Display display;
  private Command cmdKeluar, cmdLanjut, cmdKembali, cmdKirim;
  private Displayable prevScreen;
  private TextBox tfNum, tfText;
  private String port;
  private Thread thread;
  private Alert alert;
   
  private final String INVALID_PHONE =
    "Nomor yang dimasukkan tidak absah";
   
  public KirimSMS() {
    display = Display.getDisplay(this);
       
    port = getAppProperty("Port-SMS");
       
    cmdKeluar = new Command("Keluar", Command.EXIT, 1);
    cmdLanjut = new Command("Lanjut", Command.SCREEN, 1);
    cmdKembali = new Command("Kembali", Command.BACK, 1);
    cmdKirim = new Command("Kirim", Command.SCREEN, 1);
       
    alert = new Alert(null);
    alert.setTimeout(3000);
  }   
   
  public void startApp() {
    tfNum = generatePhoneInput();
  }
   
  public void pauseApp() {
  }
   
  public void destroyApp(boolean unconditional) {
  }
   
  public void commandAction(Command c, Displayable s) {
    if (c == cmdKeluar) {
      destroyApp(false);
      notifyDestroyed();
    } else if (c == cmdKembali) {
      display.setCurrent(tfNum);
    } else if (c == cmdLanjut) {
      if (!isValidPhoneNumber(tfNum.getString())) {
        alert.setType(AlertType.ERROR);
        alert.setString(INVALID_PHONE);
        display.setCurrent(alert,tfNum);
      } else {
        tfText = generateMessageInput();
      }
    } else {
      thread = new Thread(this);
      thread.start();
    }
  }
   
  public void run() {
    MessageConnection conn = null;       
    String alamat = "sms://" + tfNum.getString() + ":" + port;       
    try {
      conn = (MessageConnection) Connector.open(alamat);
      TextMessage pesan = (TextMessage)
         conn.newMessage(MessageConnection.TEXT_MESSAGE);
      pesan.setAddress(alamat);
      pesan.setPayloadText(tfText.getString());
      conn.send(pesan);
      alert.setString("Sedang mengirim ke nomor " +
         alamat.substring(6));
      alert.setType(AlertType.INFO);
      display.setCurrent(alert);
    } catch (IOException ioe) {
      ioe.printStackTrace();
    }
    if (conn != null) {
      try {
        conn.close();
      } catch (IOException ioe) {
        ioe.printStackTrace();
      }
    }
  }
   
  public TextBox generatePhoneInput() {
    TextBox tfPhone = new TextBox("Nomor Tujuan?", null,
                                   15, TextField.PHONENUMBER);
    tfPhone.addCommand(cmdKeluar);
    tfPhone.addCommand(cmdLanjut);
    tfPhone.setCommandListener(this);
    display.setCurrent(tfPhone);
    return tfPhone;
  }
   
  public TextBox generateMessageInput() {
    TextBox tfMessage = new TextBox("Teks Pesan", null,
                                   500, TextField.ANY);
    tfMessage.addCommand(cmdKembali);
    tfMessage.addCommand(cmdKirim);
    tfMessage.setCommandListener(this);
    display.setCurrent(tfMessage);
    return tfMessage;
  }
   
  private static boolean isValidPhoneNumber(String number) {
    char[] chars = number.toCharArray();
    if (chars.length == 0) {
      return false;
    }
    int startPos = 0;
    // jika diawali dengan tanda +
    if (chars[0] == '+') {
      startPos = 1;
    }
    for (int i = startPos; i < chars.length; ++i) {
      if (!Character.isDigit(chars[i])) {
        return false;
      }
    }
    return true;
  }   
}