multiplepiechartdemo2.java

很好的制作统计图表的代码

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// Decompiler options: packimports(3) 

package org.jfree.chart.demo;

import java.awt.*;
import java.text.NumberFormat;
import org.jfree.chart.*;
import org.jfree.chart.labels.StandardPieItemLabelGenerator;
import org.jfree.chart.plot.MultiplePiePlot;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.util.TableOrder;

public class MultiplePieChartDemo2 extends ApplicationFrame
{

    public MultiplePieChartDemo2(String s)
    {
        super(s);
        CategoryDataset categorydataset = createDataset();
        JFreeChart jfreechart = createChart(categorydataset);
        ChartPanel chartpanel = new ChartPanel(jfreechart, true, true, true, false, true);
        chartpanel.setPreferredSize(new Dimension(600, 380));
        setContentPane(chartpanel);
    }

    private CategoryDataset createDataset()
    {
        double ad[][] = {
            {
                3D, 4D, 3D, 5D
            }, {
                5D, 7D, 6D, 8D
            }, {
                5D, 7D, 3D, 8D
            }, {
                1.0D, 2D, 3D, 4D
            }, {
                2D, 3D, 2D, 3D
            }
        };
        CategoryDataset categorydataset = DatasetUtilities.createCategoryDataset("Region ", "Sales/Q", ad);
        return categorydataset;
    }

    private JFreeChart createChart(CategoryDataset categorydataset)
    {
        JFreeChart jfreechart = ChartFactory.createMultiplePieChart("Multiple Pie Chart", categorydataset, TableOrder.BY_COLUMN, true, true, false);
        MultiplePiePlot multiplepieplot = (MultiplePiePlot)jfreechart.getPlot();
        multiplepieplot.setBackgroundPaint(Color.white);
        multiplepieplot.setOutlineStroke(new BasicStroke(1.0F));
        JFreeChart jfreechart1 = multiplepieplot.getPieChart();
        PiePlot pieplot = (PiePlot)jfreechart1.getPlot();
        pieplot.setBackgroundPaint(null);
        pieplot.setOutlineStroke(null);
        pieplot.setLabelGenerator(new StandardPieItemLabelGenerator("{0} ({2})", NumberFormat.getNumberInstance(), NumberFormat.getPercentInstance()));
        pieplot.setMaximumLabelWidth(0.34999999999999998D);
        pieplot.setLabelFont(new Font("SansSerif", 0, 9));
        pieplot.setInteriorGap(0.29999999999999999D);
        return jfreechart;
    }

    public static void main(String args[])
    {
        MultiplePieChartDemo2 multiplepiechartdemo2 = new MultiplePieChartDemo2("Multiple Pie Chart Demo 2");
        multiplepiechartdemo2.pack();
        RefineryUtilities.centerFrameOnScreen(multiplepiechartdemo2);
        multiplepiechartdemo2.setVisible(true);
    }
}