/**
   * checks to see if client is banned from the room called before client joins a room
   *
   * <p>Also cleans BanList of expired bans if found
   *
   * @param roomName the room to check
   * @return true is banned false if not
   */
  public Boolean isBanned(String roomName) {
    Boolean isBanned = false;

    Iterator<Ban> iter = banList.iterator();
    Ban ban;

    while (iter.hasNext()) {
      ban = iter.next();
      if (ban.getRoomName().equals(roomName)) {
        // if there is a ban on the room to join set isBanned to the value of that ban
        isBanned = ban.isBanned();
      }

      // if an expired ban is found remove from banList
      if (ban.isBanned() == false) {
        iter.remove();
      }
    }

    return isBanned;
  }
 @Override
 public void run() {
   // after ban duration set ban to false
   ban.setIsBanned(false);
 }