How to use JFree chart in java?
Add the following jar files in
class path:
jcommon-1.0.16.jar, jfreechart-1.0.20.jar
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;
public class PieChartExample
extends JFrame {
public PieChartExample(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("Hyderabad", 25);
result.setValue("Chennai", 23);
result.setValue("Mumbai", 30);
result.setValue("Banglore", 22);
return result;
}
//Creates a chart
private JFreeChart
createChart(PieDataset dataset, String title) {
JFreeChart chart = ChartFactory.
createPieChart3D(title,dataset,true,true,false);
PiePlot3D plot = (PiePlot3D)
chart.getPlot();
plot.setStartAngle(290);
plot.setDirection(Rotation.CLOCKWISE);
plot.setForegroundAlpha(0.5f);
return chart;
}
}
Write the Main class:
public class MainClass {
public static void main(String[]
args) {
PieChartExample example = new PieChartExample("Comparison", "largest
city in population");
example.pack();
Example.setVisible(true);
}
}
