exception problem

    public Collection<Player> movePlayersToGame(Player player) throws PlayerNotOnlineException, PlayerAlreadyInGameException, GameNotInProgressException
    {
        if(!this.isInGame())
            throw new GameNotInProgressException();

        if(!player.isOnline())
            throw new PlayerNotOnlineException(player, "Cannot move player to game because player is not online.");

        synchronized(busyPlayersInGame)
        {
            if(this.playersInGame.contains(player))
                throw new PlayerAlreadyInGameException(player, "Player is already in game.");

            this.playersInGame.add(player);
        }

        synchronized(busyPlayersInLobby)
        { this.playersInLobby.remove(player); }

        this.currentStage.tpPlayersToStartingPositions(player);
        return new ArrayList<Player>(Arrays.asList(player));
    }

    public Collection<Player> movePlayersToGame(Collection<? extends Player> players) throws GameNotInProgressException
    {
        if(!this.isInGame())
            throw new GameNotInProgressException();

        Collection<Player> returnVals = new ArrayList<Player>();

        // wip
    }