Get an access to JFrame components

Question

How to get an access to the XYSeries and XYPlot placed on JFrame ? Of course, I can use the variable names series and plot , but my question refers to the functional way to access these components, ie f.getContentPane() ... This is useful when the function returns JFrame .

JFrame f = new JFrame(title);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setLayout(new BorderLayout(0, 5));
XYSeries series = new XYSeries("");
XYDataset data = createDataset(series,0,indf,oldpop);
JFreeChart chart = ChartFactory.createScatterPlot(title, xtitle, ytitle, data, PlotOrientation.VERTICAL, false, true, false);
XYPlot plot = chart.getXYPlot();
XYLineAndShapeRenderer renderer =
                (XYLineAndShapeRenderer) plot.getRenderer();
renderer.setBaseShapesVisible(true);          plot.getDomainAxis().setStandardTickUnits(NumberAxis.createIntegerTickUnits());
ChartPanel chartPanel = new ChartPanel(chart);
f.add(chartPanel, BorderLayout.CENTER);
chartPanel.setMouseWheelEnabled(true);
chartPanel.setHorizontalAxisTrace(true);
chartPanel.setVerticalAxisTrace(true);
JPanel panel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
f.add(panel, BorderLayout.SOUTH);

Answer 1

ChartPanel is JComponent which renders JFreeChart ; both XYSeries and XYPlot are components, these objects used by JFreeChart . Since they're not components, you can't access them by traversing component hierarchy, you have to get them from ChartPanel and JFreeChart .

Find ChartPanel in the component hierarchy, use getChart() to get JFreeChart object, and then get the objects you want from it, just like you do in the code above:

XYPlot plot = chart.getXYPlot();