Java tutorial
/* =========================================================== * 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.] * * ----------------------- * SurveyResultsDemo2.java * ----------------------- * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: SurveyResultsDemo2.java,v 1.14 2004/04/26 19:12:03 taqua Exp $ * * Changes * ------- * 31-Oct-2003 : Version 1 (DG); * */ package org.jfree.chart.demo; import java.awt.Color; import java.awt.Font; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.ExtendedCategoryAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.labels.ItemLabelAnchor; import org.jfree.chart.labels.ItemLabelPosition; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.BarRenderer; import org.jfree.chart.title.TextTitle; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.HorizontalAlignment; import org.jfree.ui.RefineryUtilities; import org.jfree.ui.TextAnchor; /** * A vertical bar chart. * */ public class SurveyResultsDemo2 extends ApplicationFrame { /** * Creates a new demo. * * @param title the frame title. */ public SurveyResultsDemo2(final String title) { super(title); final CategoryDataset dataset = createDataset(); final JFreeChart chart = createChart(dataset); // add the chart to a panel... final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(300, 270)); setContentPane(chartPanel); } /** * Creates a dataset. * * @return The dataset. */ private CategoryDataset createDataset() { final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(1.32, "Results", "Sm."); dataset.addValue(0.40, "Results", "Med."); dataset.addValue(2.62, "Results", "Lg."); dataset.addValue(1.44, "Results", "All"); return dataset; } /** * Creates a chart. * * @param dataset the dataset. * * @return The chart. */ private JFreeChart createChart(final CategoryDataset dataset) { final JFreeChart chart = ChartFactory.createBarChart(null, // chart title null, // domain axis label null, // range axis label dataset, // data PlotOrientation.VERTICAL, // orientation false, // include legend true, false); chart.setBackgroundPaint(Color.white); chart.getPlot().setOutlinePaint(null); final TextTitle title = new TextTitle("Figure 8.5 - Case studies are available"); title.setHorizontalAlignment(HorizontalAlignment.LEFT); title.setBackgroundPaint(Color.red); title.setPaint(Color.white); chart.setTitle(title); final CategoryPlot plot = chart.getCategoryPlot(); final ValueAxis rangeAxis = plot.getRangeAxis(); rangeAxis.setRange(0.0, 5.0); rangeAxis.setVisible(false); final ExtendedCategoryAxis domainAxis = new ExtendedCategoryAxis(null); domainAxis.setTickLabelFont(new Font("SansSerif", Font.BOLD, 12)); domainAxis.setCategoryMargin(0.30); domainAxis.addSubLabel("Sm.", "(10)"); domainAxis.addSubLabel("Med.", "(10)"); domainAxis.addSubLabel("Lg.", "(10)"); domainAxis.addSubLabel("All", "(10)"); plot.setDomainAxis(domainAxis); final BarRenderer renderer = (BarRenderer) plot.getRenderer(); renderer.setSeriesPaint(0, new Color(0x9C, 0xA4, 0x4A)); renderer.setBaseOutlineStroke(null); renderer.setItemLabelsVisible(true); renderer.setItemLabelFont(new Font("SansSerif", Font.PLAIN, 18)); final ItemLabelPosition position = new ItemLabelPosition(ItemLabelAnchor.INSIDE12, TextAnchor.TOP_CENTER); renderer.setPositiveItemLabelPosition(position); renderer.setPositiveItemLabelPositionFallback(new ItemLabelPosition()); return chart; } // **************************************************************************** // * 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. * // **************************************************************************** /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final SurveyResultsDemo2 demo = new SurveyResultsDemo2("Survey Results Demo 2"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }