arr.addEntry(18, 17, 539, "Audi");
arr.addEntry(7, 89, 864, "BMW");
arr.addEntry(2, 13, 1026, "Bugatti");
lines.add(arr);
JQPlot chart2 =
new JQPlot("chart2", new ListModel<BubbleSeries<Integer, Integer, Integer, String>>(
lines));
PlotOptions chart2O = chart2.getOptions();
chart2O.setTitle("Bubble Gradient Fills<sup>*</sup>");
chart2O.getSeriesDefaults().setRenderer("$.jqplot.BubbleRenderer");
PlotBubbleRendererOptions renderOptions = new PlotBubbleRendererOptions();
renderOptions.setBubbleGradients(true);
chart2O.getSeriesDefaults().setRendererOptions(renderOptions);