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.] * * --------------- * GanttDemo1.java * --------------- * (C) Copyright 2002-2004, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: GanttDemo1.java,v 1.12 2004/04/26 19:11:54 taqua Exp $ * * Changes * ------- * 06-Jun-2002 : Version 1 (DG); * 10-Oct-2002 : Modified to use DemoDatasetFactory (DG); * 10-Jan-2003 : Renamed GanttDemo --> GanttDemo1 (DG); * 16-Oct-2003 : Shifted dataset from DemoDatasetFactory to this class (DG); * */ package Negocio.Produccion.Planificacion; import java.util.Calendar; import java.util.Date; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.data.category.IntervalCategoryDataset; import org.jfree.data.gantt.Task; import org.jfree.data.gantt.TaskSeries; import org.jfree.data.gantt.TaskSeriesCollection; import org.jfree.data.time.SimpleTimePeriod; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * A simple demonstration application showing how to create a Gantt chart. * <P> * This demo is intended to show the conceptual approach rather than being a polished * implementation. * * */ public class GanttDemo extends ApplicationFrame { /** * Creates a new demo. * * @param title the frame title. */ public GanttDemo(final String title) { super(title); final IntervalCategoryDataset 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(500, 270)); setContentPane(chartPanel); } // **************************************************************************** // * 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 dataset for a Gantt chart. * * @return The dataset. */ public static IntervalCategoryDataset createDataset() { final TaskSeries s1 = new TaskSeries("Scheduled"); s1.add(new Task("Write Proposal", new SimpleTimePeriod(date(1, Calendar.APRIL, 2001), date(5, Calendar.APRIL, 2001)))); s1.add(new Task("Obtain Approval", new SimpleTimePeriod(date(9, Calendar.APRIL, 2001), date(9, Calendar.APRIL, 2001)))); s1.add(new Task("Requirements Analysis", new SimpleTimePeriod(date(10, Calendar.APRIL, 2001), date(5, Calendar.MAY, 2001)))); s1.add(new Task("Design Phase", new SimpleTimePeriod(date(6, Calendar.MAY, 2001), date(30, Calendar.MAY, 2001)))); s1.add(new Task("Design Signoff", new SimpleTimePeriod(date(2, Calendar.JUNE, 2001), date(2, Calendar.JUNE, 2001)))); s1.add(new Task("Alpha Implementation", new SimpleTimePeriod(date(3, Calendar.JUNE, 2001), date(31, Calendar.JULY, 2001)))); s1.add(new Task("Design Review", new SimpleTimePeriod(date(1, Calendar.AUGUST, 2001), date(8, Calendar.AUGUST, 2001)))); s1.add(new Task("Revised Design Signoff", new SimpleTimePeriod(date(10, Calendar.AUGUST, 2001), date(10, Calendar.AUGUST, 2001)))); s1.add(new Task("Beta Implementation", new SimpleTimePeriod(date(12, Calendar.AUGUST, 2001), date(12, Calendar.SEPTEMBER, 2001)))); s1.add(new Task("Testing", new SimpleTimePeriod(date(13, Calendar.SEPTEMBER, 2001), date(31, Calendar.OCTOBER, 2001)))); s1.add(new Task("Final Implementation", new SimpleTimePeriod(date(1, Calendar.NOVEMBER, 2001), date(15, Calendar.NOVEMBER, 2001)))); s1.add(new Task("Signoff", new SimpleTimePeriod(date(28, Calendar.NOVEMBER, 2001), date(30, Calendar.NOVEMBER, 2001)))); final TaskSeries s2 = new TaskSeries("Actual"); s2.add(new Task("Write Proposal", new SimpleTimePeriod(date(1, Calendar.APRIL, 2001), date(5, Calendar.APRIL, 2001)))); s2.add(new Task("Obtain Approval", new SimpleTimePeriod(date(9, Calendar.APRIL, 2001), date(9, Calendar.APRIL, 2001)))); s2.add(new Task("Requirements Analysis", new SimpleTimePeriod(date(10, Calendar.APRIL, 2001), date(15, Calendar.MAY, 2001)))); s2.add(new Task("Design Phase", new SimpleTimePeriod(date(15, Calendar.MAY, 2001), date(17, Calendar.JUNE, 2001)))); s2.add(new Task("Design Signoff", new SimpleTimePeriod(date(30, Calendar.JUNE, 2001), date(30, Calendar.JUNE, 2001)))); s2.add(new Task("Alpha Implementation", new SimpleTimePeriod(date(1, Calendar.JULY, 2001), date(12, Calendar.SEPTEMBER, 2001)))); s2.add(new Task("Design Review", new SimpleTimePeriod(date(12, Calendar.SEPTEMBER, 2001), date(22, Calendar.SEPTEMBER, 2001)))); s2.add(new Task("Revised Design Signoff", new SimpleTimePeriod(date(25, Calendar.SEPTEMBER, 2001), date(27, Calendar.SEPTEMBER, 2001)))); s2.add(new Task("Beta Implementation", new SimpleTimePeriod(date(27, Calendar.SEPTEMBER, 2001), date(30, Calendar.OCTOBER, 2001)))); s2.add(new Task("Testing", new SimpleTimePeriod(date(31, Calendar.OCTOBER, 2001), date(17, Calendar.NOVEMBER, 2001)))); s2.add(new Task("Final Implementation", new SimpleTimePeriod(date(18, Calendar.NOVEMBER, 2001), date(5, Calendar.DECEMBER, 2001)))); s2.add(new Task("Signoff", new SimpleTimePeriod(date(10, Calendar.DECEMBER, 2001), date(11, Calendar.DECEMBER, 2001)))); final TaskSeriesCollection collection = new TaskSeriesCollection(); collection.add(s1); collection.add(s2); return collection; } /** * Utility method for creating <code>Date</code> objects. * * @param day the date. * @param month the month. * @param year the year. * * @return a date. */ private static Date date(final int day, final int month, final int year) { final Calendar calendar = Calendar.getInstance(); calendar.set(year, month, day); final Date result = calendar.getTime(); return result; } /** * Creates a chart. * * @param dataset the dataset. * * @return The chart. */ private JFreeChart createChart(final IntervalCategoryDataset dataset) { final JFreeChart chart = ChartFactory.createGanttChart("Gantt Chart Demo", // chart title "Task", // domain axis label "Date", // range axis label dataset, // data true, // include legend true, // tooltips false // urls ); // chart.getCategoryPlot().getDomainAxis().setMaxCategoryLabelWidthRatio(10.0f); return chart; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final GanttDemo demo = new GanttDemo("Gantt Chart Demo 1"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }