Java XMPP Spam bot -Aluf

import java.util.Date;

import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.Roster;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smackx.packet.Nick;
import org.jivesoftware.smackx.packet.VCard;

public class Nespi {
        private final static String SERVER = "jabber.cz";
        private final static String JMENO = "login";
        private final static String HESLO = "heslo";
        private final static String NICK = "Nespi!";
        private final static int STATUS_UPDATE_INTERVAL = 60; // [s]

        public static boolean aktualizovat = true;

        private static Connection con;
        private static Presence pr;

        public static void main(String[] args) throws XMPPException,
                        InterruptedException {

                con = new XMPPConnection(SERVER);
                con.connect();
                con.login(JMENO, HESLO);

                Roster.setDefaultSubscriptionMode(Roster.SubscriptionMode.accept_all);

                pr = new Presence(Presence.Type.available);
                pr.setStatus(";-)");
                con.sendPacket(pr);

                new Nick(NICK);
                VCard vCard = new VCard();
                vCard.setJabberId(JMENO + "@" + SERVER);
                vCard.setNickName(NICK);
                vCard.save(con);

                class Status implements Runnable {
                        @Override
                        public void run() {
                                while (aktualizovat) {
                                        posliZpravu("JABBER_ID", "Nespi!");
                                        try {
                                                Thread.sleep(STATUS_UPDATE_INTERVAL*1000);
                                        } catch (InterruptedException e) {
                                                e.printStackTrace();
                                        }
                                }
                        }
                }

                Status st = new Status();
                Thread vlakno = new Thread(st);
                vlakno.start();
                System.out.println("XMPP klient byl uspesne spusten.");
                vlakno.join();
                con.disconnect();

        }

        public static void posliZpravu(String komuJID, String textZpravy) {
                Message zprava = new Message();
                zprava.setTo(komuJID);
                zprava.setBody(textZpravy);
                zprava.setType(Message.Type.chat);
                con.sendPacket(zprava);

                System.out.println("Zprava odeslana: " + new Date().toString());
        }

}