barchartdemo11.java

jfreechart1.0.6源程序,没有注释,不过都能运行起来

package demo;

import java.awt.*;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class BarChartDemo11 extends ApplicationFrame
{

    public BarChartDemo11(String s)
    {
        super(s);
        CategoryDataset categorydataset = createDataset();
        JFreeChart jfreechart = createChart(categorydataset);
        ChartPanel chartpanel = new ChartPanel(jfreechart, false);
        chartpanel.setPreferredSize(new Dimension(500, 270));
        setContentPane(chartpanel);
    }

    private static CategoryDataset createDataset()
    {
        DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
        defaultcategorydataset.addValue(23192D, "S1", "GNU General Public Licence");
        defaultcategorydataset.addValue(3157D, "S1", "GNU Lesser General Public Licence");
        defaultcategorydataset.addValue(1506D, "S1", "BSD Licence (Original)");
        defaultcategorydataset.addValue(1283D, "S1", "BSD Licence (Revised)");
        defaultcategorydataset.addValue(738D, "S1", "MIT/X Consortium Licence");
        defaultcategorydataset.addValue(630D, "S1", "Artistic Licence");
        defaultcategorydataset.addValue(585D, "S1", "Public Domain");
        defaultcategorydataset.addValue(349D, "S1", "Apache Licence 2.0");
        defaultcategorydataset.addValue(317D, "S1", "Apache Licence");
        defaultcategorydataset.addValue(309D, "S1", "Mozilla Public Licence");
        defaultcategorydataset.addValue(918D, "S1", "Other");
        return defaultcategorydataset;
    }

    private static JFreeChart createChart(CategoryDataset categorydataset)
    {
        JFreeChart jfreechart = ChartFactory.createBarChart("Open Source Projects By Licence", "Licence", "Project Count", categorydataset, PlotOrientation.HORIZONTAL, false, true, false);
        jfreechart.setBackgroundPaint(Color.white);
        CategoryPlot categoryplot = (CategoryPlot)jfreechart.getPlot();
        categoryplot.setBackgroundPaint(Color.lightGray);
        categoryplot.setDomainGridlinePaint(Color.white);
        categoryplot.setDomainGridlinesVisible(true);
        categoryplot.setRangeGridlinePaint(Color.white);
        categoryplot.getDomainAxis().setMaximumCategoryLabelWidthRatio(0.4F);
        NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer();
        barrenderer.setDrawBarOutline(false);
        GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, new Color(0, 0, 64));
        barrenderer.setSeriesPaint(0, gradientpaint);
        return jfreechart;
    }

    public static JPanel createDemoPanel()
    {
        JFreeChart jfreechart = createChart(createDataset());
        return new ChartPanel(jfreechart);
    }

    public static void main(String args[])
    {
        BarChartDemo11 barchartdemo11 = new BarChartDemo11("Bar Chart Demo 11");
        barchartdemo11.pack();
        RefineryUtilities.centerFrameOnScreen(barchartdemo11);
        barchartdemo11.setVisible(true);
    }
}