private void init() {
// Listens for all roster exchange packets and fire the roster exchange listeners.
packetListener = new PacketListener() {
public void processPacket(Packet packet) {
Message message = (Message) packet;
RosterExchange rosterExchange =
(RosterExchange) message.getExtension("x", "jabber:x:roster");
// Fire event for roster exchange listeners
fireRosterExchangeListeners(message.getFrom(), rosterExchange.getRosterEntries());
};
};
con.addPacketListener(packetListener, packetFilter);
}