Creating PieChart Using JFreeCharts

To create Pie charts using JFreeChart API you need to include following API jars to you project.
1. jcommon-1.0.16.jar
2. jfreechart-1.0.13.jar

Create a project structure as shown below,

Create a PieChart.java class having pie chart implementation. As shown below,

PieChart.java

package com.jfreechart.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;


@SuppressWarnings("serial")
public class PieChart extends JFrame {

  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);

    }
   
    //Here is the dataset creation which is used for the information which we want to show in piechart.
    private  PieDataset createDataset() {
        DefaultPieDataset result = new DefaultPieDataset();
        result.setValue("INDIA", 29);
        result.setValue("UK", 20);
        result.setValue("USA", 51);
        return result;
       
    }
   
   
    private JFreeChart createChart(PieDataset dataset, String title) {
        //Here we are creating the 3D pie chart with dataset(created above) and with legend.
        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;
       
    }
}


Then create Main class which have the call to createing piechart method. As shown below,
Main.java
package com.jfreechart.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);
      }
}

Run the Main class as a JAVA application, you will get a output as JFrame showing the piecharts.

Output:

For more information or any queries please mail me at
amol.phasale@gmail.com

Thank you.