JavaFX - 如何添加新记录到表

import java.util.Random;
import javafx.application.Application;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.chart.XYChart;
import javafx.scene.control.Button;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Callback;

/**
 * @web http://java-buddy.blogspot.com/
 */
public class Main extends Application
{

    private TableView tableView = new TableView();
    private Button btnNew = new Button("New Record");

    static Random random = new Random();

    static final String Day[] =
    {
        "Monday",
        "Tuesday",
        "Wednesday",
        "Thursday",
        "Friday"
    };

    public static class Record
    {

        private final SimpleIntegerProperty id;
        private final SimpleIntegerProperty value_0;
        private final SimpleIntegerProperty value_1;
        private final SimpleIntegerProperty value_2;
        private final SimpleIntegerProperty value_3;
        private final SimpleIntegerProperty value_4;

        Record(int i, int v0, int v1, int v2, int v3,
                int v4)
        {
            this.id = new SimpleIntegerProperty(i);
            this.value_0 = new SimpleIntegerProperty(v0);
            this.value_1 = new SimpleIntegerProperty(v1);
            this.value_2 = new SimpleIntegerProperty(v2);
            this.value_3 = new SimpleIntegerProperty(v3);
            this.value_4 = new SimpleIntegerProperty(v4);
        }

        public int getId()
        {
            return id.get();
        }

        public void setId(int v)
        {
            id.set(v);
        }

        public int getValue_0()
        {
            return value_0.get();
        }

        public void setValue_0(int v)
        {
            value_0.set(v);
        }

        public int getValue_1()
        {
            return value_1.get();
        }

        public void setValue_1(int v)
        {
            value_1.set(v);
        }

        public int getValue_2()
        {
            return value_2.get();
        }

        public void setValue_2(int v)
        {
            value_2.set(v);
        }

        public int getValue_3()
        {
            return value_3.get();
        }

        public void setValue_3(int v)
        {
            value_3.set(v);
        }

        public int getValue_4()
        {
            return value_4.get();
        }

        public void setValue_4(int v)
        {
            value_4.set(v);
        }

    };

    ObservableList<Record> data = FXCollections.observableArrayList();

    @Override
    public void start(Stage primaryStage)
    {
        primaryStage.setTitle("java-buddy.blogspot.com");
        tableView.setEditable(true);
        Callback<TableColumn, TableCell> cellFactory
                = new Callback<TableColumn, TableCell>()
                {

                    @Override
                    public TableCell call(TableColumn p)
                    {
                        return new EditingCell();
                    }
                };

        btnNew.setOnAction(btnNewHandler);

        //init table
        //Un-editable column of "id"
        TableColumn col_id = new TableColumn("ID");
        tableView.getColumns().add(col_id);
        col_id.setCellValueFactory(
                new PropertyValueFactory<Record, String>("id"));

        //Editable columns
        for (int i = 0; i < Day.length; i++)
        {
            TableColumn col = new TableColumn(Day[i]);
            col.setCellValueFactory(
                    new PropertyValueFactory<Record, String>(
                            "value_" + String.valueOf(i)));
            tableView.getColumns().add(col);
            col.setCellFactory(cellFactory);
        }
        tableView.setItems(data);

        Group root = new Group();
        VBox vBox = new VBox();
        vBox.setSpacing(10);
        vBox.getChildren().addAll(btnNew, tableView);
        root.getChildren().add(vBox);
        primaryStage.setScene(new Scene(root, 500, 400));
        primaryStage.show();
    }

    public static void main(String[] args)
    {
        launch(args);
    }

    EventHandler<ActionEvent> btnNewHandler
            = new EventHandler<ActionEvent>()
            {

                @Override
                public void handle(ActionEvent t)
                {

                    //generate new Record with random number
                    int newId = data.size();
                    Record newRec = new Record(
                            newId,
                            random.nextInt(100),
                            random.nextInt(100),
                            random.nextInt(100),
                            random.nextInt(100),
                            random.nextInt(100));
                    data.add(newRec);

                }
            };

    class EditingCell extends TableCell<XYChart.Data, Number>
    {

        private TextField textField;

        public EditingCell()
        {
        }

        @Override
        public void startEdit()
        {

            super.startEdit();

            if (textField == null)
            {
                createTextField();
            }

            setGraphic(textField);
            setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
            textField.selectAll();
        }

        @Override
        public void cancelEdit()
        {
            super.cancelEdit();

            setText(String.valueOf(getItem()));
            setContentDisplay(ContentDisplay.TEXT_ONLY);
        }

        @Override
        public void updateItem(Number item, boolean empty)
        {
            super.updateItem(item, empty);

            if (empty)
            {
                setText(null);
                setGraphic(null);
            }
            else
            {
                if (isEditing())
                {
                    if (textField != null)
                    {
                        textField.setText(getString());
                    }
                    setGraphic(textField);
                    setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
                }
                else
                {
                    setText(getString());
                    setContentDisplay(ContentDisplay.TEXT_ONLY);
                }
            }
        }

        private void createTextField()
        {
            textField = new TextField(getString());
            textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
            textField.setOnKeyPressed(new EventHandler<KeyEvent>()
            {

                @Override
                public void handle(KeyEvent t)
                {
                    if (t.getCode() == KeyCode.ENTER)
                    {
                        commitEdit(Integer.parseInt(textField.getText()));
                    }
                    else if (t.getCode() == KeyCode.ESCAPE)
                    {
                        cancelEdit();
                    }
                }
            });
        }

        private String getString()
        {
            return getItem() == null ? "" : getItem().toString();
        }
    }

}