In this section we are providing you an example to create a Pie Chart.
Description of Example
For creating a Pie Chart we use PieDataset. In this example, for
creating a PieDataset we are using DefaultPieDataset class. Then we add some data in this
dataset that will show in chart.
Description of Code
DefaultPieDataset pieDataset = new
DefaultPieDataset();
For defining a dataset for a pie chart we have to create
an object of DefaultPieDataSet type :
setValue(?one?, new Integer(10));
After creating the instance of dataset then we have to add the data in
the data set by invoking the method setValue(). Like
JFreeChart chart =
ChartFactory.createPieChart("Pie Chart using JFreeChart", pieDataset
true, true, true);
After added the data in dataset we create the Pie Chart by invoking the createPieChart()
method. This method is a static method of ChartFactory class and its returns
the object of JFreeChart type. This method syntax is:
Public static JFreeChart createPieChart(java.lang.String title,
pieDataset dataset, boolean legend, boolean tooltips, boolean urls);
ChartFrame frame1=new
ChartFrame("Pie Chart",chart);
After this we create the object of
ChartFrame. It used to display a chart.
Here is code of the program :
import java.awt.*;
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Output of the Program :

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