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.] * * ------------------ * DualAxisDemo2.java * ------------------ * (C) Copyright 2002-2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: DualAxisDemo2.java,v 1.17 2004/05/21 10:09:10 mungady Exp $ * * Changes * ------- * 19-Nov-2002 : Version 1 (DG); * 27-Apr-2004 : Updated for changes to the XYPlot class (DG); * */ package in.BBAT.presenter; import in.BBAT.data.model.Entities.CpuUsageEntity; import in.BBAT.data.model.Entities.MemoryEntity; import in.BBAT.presenter.views.tester.ScreenShotView; import java.awt.Color; import java.text.SimpleDateFormat; import java.util.Date; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.labels.StandardXYToolTipGenerator; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.chart.renderer.xy.XYItemRenderer; import org.jfree.data.time.Millisecond; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.XYDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * An example of a time series chart. For the most part, default settings are used, except that * the renderer is modified to show filled shapes (as well as lines) at each data point. * */ public class DualAxisDemo2 extends ApplicationFrame { /** * A demonstration application showing how to create a time series chart with dual axes. * * @param title the frame title. */ public DualAxisDemo2(final String title) { super(title); // create a title... final String chartTitle = "Memory & CPU usage"; final XYDataset dataset = createDataset1(); final JFreeChart chart = ChartFactory.createTimeSeriesChart(chartTitle, "Time", "Memory usage (kB)", dataset, true, true, false); // final StandardLegend legend = (StandardLegend) chart.getLegend(); // legend.setDisplaySeriesShapes(true); final XYPlot plot = chart.getXYPlot(); final NumberAxis axis2 = new NumberAxis("CPU usage (%)"); axis2.setAutoRangeIncludesZero(false); plot.setRangeAxis(1, axis2); plot.setDataset(1, createDataset2()); plot.mapDatasetToRangeAxis(1, 1); final XYItemRenderer renderer = plot.getRenderer(); renderer.setToolTipGenerator(StandardXYToolTipGenerator.getTimeSeriesInstance()); if (renderer instanceof StandardXYItemRenderer) { final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer; // rr.setPlotShapes(true); rr.setShapesFilled(true); } final StandardXYItemRenderer renderer2 = new StandardXYItemRenderer(); renderer2.setSeriesPaint(0, Color.black); // renderer2.setPlotShapes(true); renderer.setToolTipGenerator(StandardXYToolTipGenerator.getTimeSeriesInstance()); plot.setRenderer(1, renderer2); final DateAxis axis = (DateAxis) plot.getDomainAxis(); axis.setDateFormatOverride(new SimpleDateFormat("hh:mm:ss")); final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); setContentPane(chartPanel); } /** * Creates a sample dataset. * * @return The dataset. */ private XYDataset createDataset2() { final TimeSeries s1 = new TimeSeries("CPU", Millisecond.class); for (CpuUsageEntity ent : ScreenShotView.testCase.getCpuUsageValues()) { s1.addOrUpdate(new Millisecond(new Date(ent.getTime())), ent.getPercent()); } final TimeSeriesCollection dataset = new TimeSeriesCollection(); dataset.addSeries(s1); return dataset; } /** * Creates a sample dataset. * * @return The dataset. */ private XYDataset createDataset1() { final TimeSeries s2 = new TimeSeries("Memory", Millisecond.class); for (MemoryEntity ent : ScreenShotView.testCase.getMemoryUsageValues()) { s2.addOrUpdate(new Millisecond(new Date(ent.getTime())), ent.getPercent()); } final TimeSeriesCollection dataset = new TimeSeriesCollection(); dataset.addSeries(s2); return dataset; } // **************************************************************************** // * 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 DualAxisDemo2 demo = new DualAxisDemo2("Memory & CPU Usage"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }