3D效果的饼图
今天给大家一个由JFreeChart组件实现的3D效果的饼图，同时自己也收藏一下。代码如下：
package com.gxa.edu.test;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.ui.ApplicationFrame;import org.jfree.ui.RefineryUtilities;import org.jfree.util.Rotation;/** * A simple demonstration application showing how to create a pie chart using data from a * {@link DefaultPieDataset}. * */public class PieChart3DDemo1 extends ApplicationFrame { /** * Creates a new demo. * * @param title the frame title. */ public PieChart3DDemo1(final String title) { super(title); // create a dataset... final PieDataset dataset = createSampleDataset(); // create the chart... final JFreeChart chart = createChart(dataset); // add the chart to a panel... final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); setContentPane(chartPanel); } /** * Creates a sample dataset for the demo. * * @return A sample dataset. */ private PieDataset createSampleDataset() { final DefaultPieDataset result = new DefaultPieDataset(); result.setValue("Java", new Double(43.2)); result.setValue("Visual Basic", new Double(10.0)); result.setValue("C/C++", new Double(17.5)); result.setValue("PHP", new Double(32.5)); result.setValue("Perl", new Double(1.0)); return result; } // **************************************************************************** // * JFREECHART DEVELOPER GUIDE * // * The JFreeChart Developer Guide, written by David Gilbert, is available * // * to purchase from Object Refinery Limited: * // * * // * http://www.object-refinery.com/jfreechart/guide.html * // * * // * Sales are used to provide funding for the JFreeChart project - please * // * support us so that we can continue developing free software. * // **************************************************************************** /** * Creates a sample chart. * * @param dataset the dataset. * * @return A chart. */ private JFreeChart createChart(final PieDataset dataset) { final JFreeChart chart = ChartFactory.createPieChart3D( "Pie Chart 3D Demo 1", // chart title dataset, // data true, // include legend true, false ); final PiePlot3D plot = (PiePlot3D) chart.getPlot(); plot.setStartAngle(290); plot.setDirection(Rotation.CLOCKWISE); plot.setForegroundAlpha(0.5f); plot.setNoDataMessage("No data to display"); return chart; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final PieChart3DDemo1 demo = new PieChart3DDemo1("Pie Chart 3D Demo 1"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); }}