Pie Charts use a circle to display the information. The circle is divided into different parts depending on the data. Each part will display the related piece of information.

                          Figure 1 - An example Pie Chart

[Java]
    // Create a PDF Document
    Document document = new Document();
    // Create a Page and add it to the document
    Page page = new Page(PageSize.A4, PageOrientation.LANDSCAPE);
    document.getPages().add(page);
        
    // Create a chart
    Chart chart = new Chart(0, 0, 700, 400);
    // Add a plot area to the chart
    PlotArea plotArea = chart.getPlotAreas().add(50, 50, 300, 300);
        
    // Create the Header titles and add it to the chart
    Title tTitle = new Title("Website Viewers (in millions)");
    Title tTitle1 = new Title("Year 2007");
    chart.getHeaderTitles().add(tTitle);
    chart.getHeaderTitles().add(tTitle1);
        
    // Create a scalar datalabel
    ScalarDataLabel da = new ScalarDataLabel(true, false, false);
    // Create a pie series
    PieSeries pieSeries = new PieSeries();
    // Set scalar datalabel to the pie series
    pieSeries.setDataLabel(da);
    // Add series to the plot area
    plotArea.getSeries().add(pieSeries);
     
    AutoGradient myAutogradient1 = new AutoGradient(90.0f, CmykColor.getRed(), CmykColor.getIndianRed()) 
    AutoGradient myAutogradient2 = new AutoGradient(90.0f, CmykColor.getGreen(), CmykColor.getYellowGreen()) 
    AutoGradient myAutogradient3 = new AutoGradient(90.0f, CmykColor.getBlue(), CmykColor.getLightBlue())   
    //Add pie series elements to the pie series
    pieSeries.getElements().add(27, "Website A", myAutogradient1);
    pieSeries.getElements().add(19, "Website B", myAutogradient2);
    pieSeries.getElements().add(21, "Website C", myAutogradient3);
        
    // Add the chart to the page
    page.getElements().add(chart);
    // Save the pdf
    document.draw("[PhysicalPath]/MyDocument.pdf");