Time for action – creating a Pie chart using the JFreeChart API

In this section, we will demonstrate how to create a Pie chart using the JFreeChart API and rendering it using the <p:graphicImage> and StreamedContent API.

1. Create a Pie chart using the JFreeChart API and attach the PrimeFaces StreamedContent to a stream-generated chart image.

   import java.io.File;
   import java.io.FileInputStream;
   import org.jfree.chart.ChartFactory;
   import org.jfree.chart.ChartUtilities;
   import org.jfree.chart.JFreeChart;
   import org.jfree.data.general.DefaultPieDataset;
   import org.jfree.data.general.PieDataset;
   import org.primefaces.model.DefaultStreamedContent;
   import org.primefaces.model.StreamedContent;
   public StreamedContent getJfreeChart()
   {
     StreamedContent content = null;
     try
     {
       DefaultPieDataset dataset = new DefaultPieDataset();  
       dataset.setValue("PrimeFaces", 455);
       dataset.setValue("JSF", 380);
       dataset.setValue("jQuery", 202);
       dataset...