package test;
    import java.awt.*;    
    import javax.swing.*;
    import java.util.*;
    import org.jfree.chart.ChartFactory;
    import org.jfree.chart.ChartPanel;
    import org.jfree.chart.JFreeChart;
    import org.jfree.chart.plot.PiePlot;
    import org.jfree.data.general.DefaultPieDataset;
    import org.jfree.data.general.PieDataset;
    public class FreeChartDemo {
        public FreeChartDemo(JPanel root_pnl, Vector<Vector>data,String title) {
        	root_pnl.add(createDemoPanel(data,title));            
        }        
        private static PieDataset createDataset(Vector<Vector>data) {
            DefaultPieDataset dataset = new DefaultPieDataset();
            
            for (int i=0;i<data.size();i++)
            {
            	dataset.setValue(
				 data.get(i).get(0).toString(),
  				 Double.parseDouble(data.get(i).get(1).toString())
				);	
            }
            return dataset;        
        }
        
        private static JFreeChart createChart(PieDataset dataset, String title) {
            
            JFreeChart chart = ChartFactory.createPieChart3D(
                title,  // chart title
                dataset,             // data
                true,               // include legend
                true,				//tool tips
                false				//urls
            );
            PiePlot plot = (PiePlot) chart.getPlot();
            plot.setSectionOutlinesVisible(false);
            plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12));
            plot.setNoDataMessage("No data available");
            plot.setCircular(false);
            plot.setLabelGap(0.02);
            return chart;
            
        }
        
        public static JPanel createDemoPanel (Vector<Vector>data, 
						String title, Dimension dim) {
            JFreeChart chart = createChart(createDataset(data),title);
            ChartPanel pnl = new ChartPanel(chart);
            pnl.setSize(dim);
            return pnl;
        }
        public static JPanel createDemoPanel(Vector<Vector>data, 
							       String title) {
            JFreeChart chart = createChart(createDataset(data),title);
            ChartPanel pnl = new ChartPanel(chart);
            return pnl;
        }   
        
        public static void main(String[] args) throws Exception{        
            Vector<Vector> v = new Vector<Vector>();
            Vector vv;
            
            vv = new Vector();
            vv.add("Value1");
            vv.add(5);
            v.add(vv);
            vv = new Vector();
            vv.add("Value2");
            vv.add(15);
            v.add(vv);
            
            vv = new Vector();
            vv.add("Value4");
            vv.add(3);
            v.add(vv);
            
            
            JFrame frm = new JFrame();
            frm.setLocationRelativeTo(null);
            frm.setSize(600,600);
            JPanel p = new JPanel();
            frm.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
            new FreeChartDemo(p, v, "Free Chart Test");
            frm.setVisible(true);
            frm.add(p);            
        }
  }