My Invient Chart is not being displaying.

Hi all,
I'm unable to display invient chart in the liferay console.Please suggest me in doing this.Please.This is my code.
public void init() {
{
InvientChartsConfig chartConfig = new InvientChartsConfig();
chartConfig.getGeneralChartConfig().setType(SeriesType.COLUMN);

chartConfig.getTitle().setText("Monthly Average Rainfall");
chartConfig.getSubtitle().setText("Source: WorldClimate.com");

CategoryAxis xAxis = new CategoryAxis();
xAxis.setCategories(Arrays.asList("Jan", "Feb", "Mar", "Apr", "May",
"Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"));
LinkedHashSet<XAxis> xAxesSet = new LinkedHashSet<InvientChartsConfig.XAxis>();
xAxesSet.add(xAxis);
chartConfig.setXAxes(xAxesSet);

NumberYAxis yAxis = new NumberYAxis();
yAxis.setMin(0.0);
yAxis.setTitle(new AxisTitle("Rainfall (mm)"));
LinkedHashSet<YAxis> yAxesSet = new LinkedHashSet<InvientChartsConfig.YAxis>();
chartConfig.setYAxes(yAxesSet);

Legend legend = new Legend();
legend.setFloating(true);
legend.setLayout(com.invient.vaadin.charts.InvientChartsConfig.Legend.Layout.VERTICAL);
legend.setPosition(new Position());
legend.getPosition().setAlign(HorzAlign.LEFT);
legend.getPosition().setVertAlign(VertAlign.TOP);
legend.getPosition().setX(100);
legend.getPosition().setY(70);
legend.setShadow(true);
legend.setBackgroundColor(new RGB(255, 255, 255));
chartConfig.setLegend(legend);

chartConfig.getTooltip().setFormatterJsFunc(
"function() {" + " return '' + this.x +': '+ this.y +' mm'; "
+ "}");

com.invient.vaadin.charts.InvientChartsConfig.ColumnConfig colCfg = new com.invient.vaadin.charts.InvientChartsConfig.ColumnConfig();
colCfg.setPointPadding(0.2);
colCfg.setBorderWidth(100);
colCfg.setBorderColor(new RGB(0, 0, 0));
chartConfig.addSeriesConfig(colCfg);

InvientCharts chart = new InvientCharts(chartConfig);
XYSeries seriesData = new XYSeries("Tokyo");
seriesData.setSeriesPoints(getPoints(seriesData, 49.9, 71.5, 106.4,
129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4));
chart.addSeries(seriesData);

seriesData = new XYSeries("New York");
seriesData.setSeriesPoints(getPoints(seriesData, 83.6, 78.8, 98.5,
93.4, 106.0, 84.5, 105.0, 104.3, 91.2, 83.5, 106.6, 92.3));
chart.addSeries(seriesData);

seriesData = new XYSeries("London");
seriesData.setSeriesPoints(getPoints(seriesData, 48.9, 38.8, 39.3,
41.4, 47.0, 48.3, 59.0, 59.6, 52.4, 65.2, 59.3, 51.2));
chart.addSeries(seriesData);

seriesData = new XYSeries("Berlin");
seriesData.setSeriesPoints(getPoints(seriesData, 42.4, 33.2, 34.5,
39.7, 52.6, 75.5, 57.4, 60.4, 47.6, 39.1, 46.8, 51.1));
chart.addSeries(seriesData);
Window mainWindow = new Window("Prueba10 Application");
System.out.println("Before");
mainWindow.addComponent(chart);
System.out.println("after");
setMainWindow(mainWindow);

}

}
private static LinkedHashSet<DecimalPoint> getPoints(Series series,
double... values) {
LinkedHashSet<DecimalPoint> points = new LinkedHashSet<DecimalPoint>();
for (double value : values) {
points.add(new DecimalPoint(series, value));
}
return points;

}

I'm getting no output in liferay console..It is displaying blank window

}

My project is too.Please suggest me
Thank you very much.