Java SE (Java Platform, Standard Edition)

This code plots a simple XYLine Chart

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class XyChart extends Application {

    @Override
    public void start(Stage stage) {
       stage.setTitle("Line plot");
        
       final CategoryAxis xAxis = new CategoryAxis();
       final NumberAxis yAxis = new NumberAxis(1, 21,0.1);
       
       yAxis.setTickUnit(1);
       yAxis.setPrefWidth(35);
       yAxis.setMinorTickCount(10);
           
       yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis){
            @Override
        public String toString(Number object){
                String label;
                label = String.format("%7.2f", object.floatValue());
                return label;
        }
    });
final LineChart<String, Number>lineChart = new LineChart<String, Number>(xAxis, yAxis);

       lineChart.setCreateSymbols(false);
       lineChart.setAlternativeRowFillVisible(false);
       lineChart.setLegendVisible(false);
               
       XYChart.Series series1 = new XYChart.Series();
        
        series1.getData().add(new XYChart.Data("Jan", 1));
        series1.getData().add(new XYChart.Data("Feb", 4));
        series1.getData().add(new XYChart.Data("Mar", 2.5));
        series1.getData().add(new XYChart.Data("Apr", 5));
        series1.getData().add(new XYChart.Data("May", 6));
        series1.getData().add(new XYChart.Data("Jun", 8));
        series1.getData().add(new XYChart.Data("Jul", 12));
        series1.getData().add(new XYChart.Data("Aug", 8));
        series1.getData().add(new XYChart.Data("Sep", 11));
        series1.getData().add(new XYChart.Data("Oct", 13));
        series1.getData().add(new XYChart.Data("Nov", 10));
        series1.getData().add(new XYChart.Data("Dec", 20));
 
        BorderPane pane = new BorderPane();
        pane.setCenter(lineChart);          
        Scene scene = new Scene(pane, 800, 600);
        lineChart.setAnimated(false);
        lineChart.getData().addAll(series1);       
         
        stage.setScene(scene);
        stage.show();
    }

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

I would like to draw arrows on the chart by left mouse click pressed and moved,such as this example

[http://s8.postimage.org/5xgu0j6kl/A02480.png]

how to do this?

Thanks!

Edited by: 932518 on 6-nov-2012 4.32