private void createOrderTableView() {
        TableColumn<Product, String> colName = new TableColumn<>("Name");
        colName.setMinWidth(100.0);
        colName.setCellValueFactory(new Callback<CellDataFeatures<Product, String>, ObservableValue<String>>() {
            public ObservableValue<String> call(CellDataFeatures<Product, String> p) {
                // p.getValue() returns the Person instance for a particular TableView row
                return p.getValue().nameProperty();
            }
        });

        TableColumn<Product, Number> colPrice = new TableColumn<Product, Number>("Price");
        colPrice.setMinWidth(100.0);
        colPrice.setCellValueFactory(new Callback<CellDataFeatures<Product, Number>, ObservableValue<Number>>() {
            public ObservableValue<Number> call(CellDataFeatures<Product, Number> p) {
                // p.getValue() returns the Person instance for a particular TableView row
                return p.getValue().priceProperty();
            }
        });

        TableColumn<Product, Number> colCount = new TableColumn<Product, Number>("Buy Count");
        colCount.setMinWidth(100.0);
        colCount.setCellValueFactory(e -> {
            return e.getValue().quantityProperty();
        });

        orderTableView = new TableView<>();
        orderTableView.getColumns().add(colName);
        orderTableView.getColumns().add(colPrice);
        orderTableView.getColumns().add(colCount);
        //orderTableView.setItems(order);
    }