Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2014, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * ------------------ * PieChartDemo1.java * ------------------ * (C) Copyright 2003-2014, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): ; * * Changes * ------- * 09-Mar-2005 : Version 1, copied from the demo collection that ships with * the JFreeChart Developer Guide (DG); * */ package icaro.aplicaciones.recursos.recursoEstadistica.jFreeChart.demo; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.GradientPaint; import java.awt.Point; import java.awt.RadialGradientPaint; import java.awt.geom.Point2D; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.StandardChartTheme; import org.jfree.chart.plot.PiePlot; import org.jfree.chart.title.TextTitle; import org.jfree.data.general.DefaultPieDataset; import org.jfree.data.general.PieDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.HorizontalAlignment; import org.jfree.ui.RectangleEdge; import org.jfree.ui.RectangleInsets; import org.jfree.ui.RefineryUtilities; /** * A simple demonstration application showing how to create a pie chart using * data from a {@link DefaultPieDataset}. */ public class PieChartDemo1 extends ApplicationFrame { private static final long serialVersionUID = 1L; static { // set a theme using the new shadow generator feature available in // 1.0.14 - for backwards compatibility it is not enabled by default // ChartFactory.setChartTheme(new StandardChartTheme("JFree/Shadow", // true)); } /** * Default constructor. * * @param title the frame title. */ public PieChartDemo1(String title) { super(title); setContentPane(createDemoPanel()); } /** * Creates a sample dataset. * * Source: http://www.bbc.co.uk/news/business-15489523 * * @return A sample dataset. */ private static PieDataset createDataset() { DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue("Samsung", new Double(27.8)); dataset.setValue("Others", new Double(55.3)); dataset.setValue("Nokia", new Double(16.8)); dataset.setValue("Apple", new Double(17.1)); return dataset; } /** * Creates a chart. * * @param dataset the dataset. * * @return A chart. */ private static JFreeChart createChart(PieDataset dataset) { JFreeChart chart = ChartFactory.createPieChart("Smart Phones Manufactured / Q3 2011", // chart title dataset, // data false, // no legend true, // tooltips false // no URL generation ); // set a custom background for the chart chart.setBackgroundPaint( new GradientPaint(new Point(0, 0), new Color(20, 20, 20), new Point(400, 200), Color.DARK_GRAY)); // customise the title position and font TextTitle t = chart.getTitle(); t.setHorizontalAlignment(HorizontalAlignment.LEFT); t.setPaint(new Color(240, 240, 240)); t.setFont(new Font("Arial", Font.BOLD, 26)); PiePlot plot = (PiePlot) chart.getPlot(); plot.setBackgroundPaint(null); plot.setInteriorGap(0.04); // plot.setOutlineVisible(false); // use gradients and white borders for the section colours plot.setSectionPaint("Others", createGradientPaint(new Color(200, 200, 255), Color.BLUE)); plot.setSectionPaint("Samsung", createGradientPaint(new Color(255, 200, 200), Color.RED)); plot.setSectionPaint("Apple", createGradientPaint(new Color(200, 255, 200), Color.GREEN)); plot.setSectionPaint("Nokia", createGradientPaint(new Color(200, 255, 200), Color.YELLOW)); plot.setBaseSectionOutlinePaint(Color.WHITE); plot.setSectionOutlinesVisible(true); plot.setBaseSectionOutlineStroke(new BasicStroke(2.0f)); // customise the section label appearance plot.setLabelFont(new Font("Courier New", Font.BOLD, 20)); plot.setLabelLinkPaint(Color.WHITE); plot.setLabelLinkStroke(new BasicStroke(2.0f)); plot.setLabelOutlineStroke(null); plot.setLabelPaint(Color.WHITE); plot.setLabelBackgroundPaint(null); // add a subtitle giving the data source TextTitle source = new TextTitle("Source: http://www.bbc.co.uk/news/business-15489523", new Font("Courier New", Font.PLAIN, 12)); source.setPaint(Color.WHITE); source.setPosition(RectangleEdge.BOTTOM); source.setHorizontalAlignment(HorizontalAlignment.RIGHT); chart.addSubtitle(source); return chart; } /** * A utility method for creating gradient paints. * * @param c1 color 1. * @param c2 color 2. * * @return A radial gradient paint. */ private static RadialGradientPaint createGradientPaint(Color c1, Color c2) { Point2D center = new Point2D.Float(0, 0); float radius = 200; float[] dist = { 0.0f, 1.0f }; return new RadialGradientPaint(center, radius, dist, new Color[] { c1, c2 }); } /** * Creates a panel for the demo (used by SuperDemo.java). * * @return A panel. */ public static JPanel createDemoPanel() { JFreeChart chart = createChart(createDataset()); chart.setPadding(new RectangleInsets(4, 8, 2, 2)); ChartPanel panel = new ChartPanel(chart); // panel.setMouseWheelEnabled(true); panel.setPreferredSize(new Dimension(600, 300)); return panel; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(String[] args) { // ****************************************************************** // More than 150 demo applications are included with the JFreeChart // Developer Guide...for more information, see: // // > http://www.object-refinery.com/jfreechart/guide.html // // ****************************************************************** PieChartDemo1 demo = new PieChartDemo1("JFreeChart: Pie Chart Demo 1"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }