public ArrayListModel getParticipantList() {
return new ArrayListModel(participantList);
}
public void setParticipantList(ArrayListModel parList) {
ArrayListModel oldList = getParticipantList();
this.participantList.clear();
if(parList!=null){
this.participantList.addAll(parList);
}
firePropertyChange(PROPERTY_PARTICIPANT_LIST, oldList, parList);