piechartdemo7.java

JfreeChart 常用图表例子

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ------------------
 * PieChartDemo7.java
 * ------------------
 * (C) Copyright 2004, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: PieChartDemo7.java,v 1.1 2004/05/26 13:02:03 mungady Exp $
 *
 * Changes
 * -------
 * 25-May-2004 : Version 1 (DG);
 *
 */

package org.jfree.chart.demo;

import java.awt.Dimension;
import java.awt.GridLayout;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A demo showing four pie charts.
 */
public class PieChartDemo7 extends ApplicationFrame {

    /**
     * Creates a new demo instance.
     * 
     * @param title  the frame title.
     */
    public PieChartDemo7(String title) {

        super(title);
        JPanel panel = new JPanel(new GridLayout(2, 2));
        DefaultPieDataset dataset = new DefaultPieDataset();
        dataset.setValue("Section 1", 23.3);
        dataset.setValue("Section 2", 56.5);
        dataset.setValue("Section 3", 43.3);
        dataset.setValue("Section 4", 11.1);
        
        JFreeChart chart1 = ChartFactory.createPieChart("Chart 1", dataset, false, false, false);
        JFreeChart chart2 = ChartFactory.createPieChart("Chart 2", dataset, false, false, false);
        PiePlot plot2 = (PiePlot) chart2.getPlot();
        plot2.setCircular(false);
        JFreeChart chart3 = ChartFactory.createPieChart3D("Chart 3", dataset, false, false, false);
        PiePlot3D plot3 = (PiePlot3D) chart3.getPlot();
        plot3.setForegroundAlpha(0.6f);
        plot3.setCircular(true);
        JFreeChart chart4 = ChartFactory.createPieChart3D("Chart 4", dataset, false, false, false);
        PiePlot3D plot4 = (PiePlot3D) chart4.getPlot();
        plot4.setForegroundAlpha(0.6f);

        panel.add(new ChartPanel(chart1));
        panel.add(new ChartPanel(chart2));
        panel.add(new ChartPanel(chart3));
        panel.add(new ChartPanel(chart4));

        panel.setPreferredSize(new Dimension(800, 600));
        setContentPane(panel);

    }

    /**
     * The starting point for the demo.
     * 
     * @param args  ignored.
     */
    public static void main(String[] args) {
        PieChartDemo7 demo = new PieChartDemo7("Pie Chart Demo 7");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
    }

}