@Override
    public String getColumnName(int column) {
        switch (column) {
            case 0:
                return "Comp";
            case 1:
                return "Date";
            case 2:
                return "Count";
            case 3:
                return "Price";
            case 4:
                return "Company";
            case 5:
                return "ActionID";
            case 6:
                return "Remark";
        }
        return "";
    }