JavaFx 2.x : How to remove and add plotted data? - javafx-2

Question

In my code below I would like to add two buttons and by clicking on a button("Remove") it will remove one by one plotted data,and plot it back by clicking on the button("Add") such as the examples:
Full data plotted by running the class
Now by a single click on a Remove button last data point disappear
another click and again last data point disappear, and so on
The inverse operation would be performed by clicking on "Add" button: each click will add back a data point
import javafx.application.Application;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.event.EventHandler;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.control.Button;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.BorderPane;
public class XYMove extends Application {
BorderPane pane;
XYChart.Series series1 = new XYChart.Series();
SimpleDoubleProperty rectinitX = new SimpleDoubleProperty();
SimpleDoubleProperty rectX = new SimpleDoubleProperty();
SimpleDoubleProperty rectY = new SimpleDoubleProperty();
Button button1 = new Button("Remove");
Button button2 = new Button("Add");
#Override
public void start(Stage stage) {
final NumberAxis xAxis = new NumberAxis(12, 20, 1);
double max = 12;
double min = 3;
max *= (1+((double)3/100));
min *= (1-((double)3/100));
final NumberAxis yAxis = new NumberAxis(min, max, 1);
xAxis.setAnimated(false);
yAxis.setAnimated(false);
yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis) {
#Override
public String toString(Number object) {
return String.format("%2.0f", object);
}
});
final LineChart<Number, Number> lineChart = new LineChart<Number, Number>(xAxis, yAxis);
lineChart.setCreateSymbols(false);
lineChart.setAlternativeRowFillVisible(false);
lineChart.setAnimated(false);
lineChart.setLegendVisible(false);
series1.getData().add(new XYChart.Data(1, 3));
series1.getData().add(new XYChart.Data(2, 8));
series1.getData().add(new XYChart.Data(3, 6));
series1.getData().add(new XYChart.Data(4, 7));
series1.getData().add(new XYChart.Data(5, 5));
series1.getData().add(new XYChart.Data(6, 6));
series1.getData().add(new XYChart.Data(7, 4));
series1.getData().add(new XYChart.Data(8, 7));
series1.getData().add(new XYChart.Data(9, 6));
series1.getData().add(new XYChart.Data(10, 7));
series1.getData().add(new XYChart.Data(11, 6));
series1.getData().add(new XYChart.Data(12, 7));
series1.getData().add(new XYChart.Data(13, 6));
series1.getData().add(new XYChart.Data(14, 12));
series1.getData().add(new XYChart.Data(15, 10));
series1.getData().add(new XYChart.Data(16, 11));
series1.getData().add(new XYChart.Data(17, 9));
series1.getData().add(new XYChart.Data(18, 10));
pane = new BorderPane();
pane.setCenter(lineChart);
Scene scene = new Scene(pane, 800, 600);
lineChart.getData().addAll(series1);
stage.setScene(scene);
scene.setOnMouseClicked(mouseHandler);
scene.setOnMouseDragged(mouseHandler);
scene.setOnMouseEntered(mouseHandler);
scene.setOnMouseExited(mouseHandler);
scene.setOnMouseMoved(mouseHandler);
scene.setOnMousePressed(mouseHandler);
scene.setOnMouseReleased(mouseHandler);
stage.show();
}
EventHandler<MouseEvent> mouseHandler = new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent mouseEvent) {
if (mouseEvent.getEventType() == MouseEvent.MOUSE_PRESSED) {
rectinitX.set(mouseEvent.getX());
}
else if (mouseEvent.getEventType() == MouseEvent.MOUSE_DRAGGED || mouseEvent.getEventType() == MouseEvent.MOUSE_MOVED) {
LineChart<Number, Number> lineChart = (LineChart<Number, Number>) pane.getCenter();
NumberAxis xAxis = (NumberAxis) lineChart.getXAxis();
double Tgap = xAxis.getWidth()/(xAxis.getUpperBound() - xAxis.getLowerBound());
double newXlower=xAxis.getLowerBound(), newXupper=xAxis.getUpperBound();
double Delta=0.3;
if(mouseEvent.getEventType() == MouseEvent.MOUSE_DRAGGED){
if(rectinitX.get() < mouseEvent.getX()&& newXlower >= 0){
newXlower=xAxis.getLowerBound()-Delta;
newXupper=xAxis.getUpperBound()-Delta;
}
else if(rectinitX.get() > mouseEvent.getX()&& newXupper <= 22){
newXlower=xAxis.getLowerBound()+Delta;
newXupper=xAxis.getUpperBound()+Delta;
}
xAxis.setLowerBound( newXlower );
xAxis.setUpperBound( newXupper );
}
rectinitX.set(mouseEvent.getX());
}
}
};
public static void main(String[] args) {
launch(args);
}
}
Thanks all.
Edit: I have been able to solve this issue, thanks all