Create a new Java project "de.vogella.jfreechart.swing.pie". Create also a package "de.vogella.jfreechart.swing.pie".

In your project create a folder "lib", and paste the JFreeChart jars into this folder.

You only need the following libraries. Please replace the version numbers with the version you are using.

Add these libraries to your classpath. See Eclipse Java IDE - Classpath for details).

Create the following two classes.

package de.vogella.jfreechart.swing.pie;

import javax.swing.JFrame;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.util.Rotation;
package de.vogella.jfreechart.swing.pie;


public class PieChart extends JFrame {

  private static final long serialVersionUID = 1L;

  public PieChart(String applicationTitle, String chartTitle) {
        super(applicationTitle);
        // This will create the dataset 
        PieDataset dataset = createDataset();
        // based on the dataset we create the chart
        JFreeChart chart = createChart(dataset, chartTitle);
        // we put the chart into a panel
        ChartPanel chartPanel = new ChartPanel(chart);
        // default size
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        // add it to our application
        setContentPane(chartPanel);

    }
    
    
/**
     * Creates a sample dataset 
     */
    private  PieDataset createDataset() {
        DefaultPieDataset result = new DefaultPieDataset();
        result.setValue("Linux", 29);
        result.setValue("Mac", 20);
        result.setValue("Windows", 51);
        return result;
        
    }
    
    
/**
     * Creates a chart
     */
    private JFreeChart createChart(PieDataset dataset, String title) {
        
        JFreeChart chart = ChartFactory.createPieChart3D(title,          // chart title
            dataset,                // data
            true,                   // include legend
            true,
            false);

        PiePlot3D plot = (PiePlot3D) chart.getPlot();
        plot.setStartAngle(290);
        plot.setDirection(Rotation.CLOCKWISE);
        plot.setForegroundAlpha(0.5f);
        return chart;
        
    }
} 

package de.vogella.jfreechart.swing.pie;


public class Main {
   public static void main(String[] args) {
          PieChart demo = new PieChart("Comparison", "Which operating system are you using?");
          demo.pack();
          demo.setVisible(true);
      }
} 

I assume that the coding is pretty much self-explaining. I tried to add lots of comments to make it easier to understand. For more complex examples have a look at the JFreeChart homepage.

Run Main.java. The result should look like the following.

http://www.jfree.org/jfreechart/ JFreeChart Homepage

Source Code of Examples

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