public Object getValueAt(int rowIndex, int columnIndex) {
            GameState bean = beans.get(rowIndex);
            switch (columnIndex) {
                case 0:
                    return bean.map;
                case 1:
                    return bean.gameIsFinish;
                case 2:
                    return bean.score;
                case 3:
                    return bean.agentIsDied;
                case 4:
                    return bean.wamplusIsDied;
                case 5:
                    return bean.sulpmuwIsDied;
                case 6:
                    return bean.hasGold;
                case 7:
                    return bean.hasFood;
                case 8:
                    return bean.hasArrow;

            }
            return "";
        }