Example: Pie Chart

A simple Pie chart is constructed in this example. Pie slice labels and colors are set and one pie slice is exploded from the center. This class extends JFrameChart, which manages the window.

import com.imsl.chart.*;
import java.awt.Color;
import java.applet.Applet;

public class PieEx1 extends javax.swing.JApplet {
    private JPanelChart panel;
    
    public void init() {
        Chart chart = new Chart(this);
        panel = new JPanelChart(chart);
        getContentPane().add(panel, java.awt.BorderLayout.CENTER);
        setup(chart);
    }
    
    static private void setup(Chart chart) {
        //	Create an instance of a Pie Chart
        double y[] = {10., 20., 30., 40.};
        Pie pie = new Pie(chart, y);
        
        //	Set the Pie Chart Title
        chart.getChartTitle().setTitle("A Simple Pie Chart");
        
        //	Set the colors of the Pie Slices
        PieSlice[] slice = pie.getPieSlice();
        slice[0].setFillColor(Color.red);
        slice[1].setFillColor(Color.blue);
        slice[2].setFillColor(Color.black);
        slice[3].setFillColor(Color.yellow);
        
        //	Set the Pie Slice Labels
        pie.setLabelType(pie.LABEL_TYPE_TITLE);
        slice[0].setTitle("Fish");
        slice[1].setTitle("Pork");
        slice[2].setTitle("Poultry");
        slice[3].setTitle("Beef");
        
        //	Explode a Pie Slice
        slice[0].setExplode(0.2);
    }
    
 
    public static void main(String argv[]) {
        JFrameChart frame = new JFrameChart();
        PieEx1.setup(frame.getChart());
        frame.show();
    }
}

Output

PieEx1

Link to Java source.