Java tutorial
package cn.edu.thss.iise.bpmdemo.statistics.actions; /* =========================================================== * 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.] * * ------------------ * PieChartDemo4.java * ------------------ * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: PieChartDemo4.java,v 1.21 2004/06/03 15:05:10 mungady Exp $ * * Changes * ------- * 11-Feb-2003 : Version 1 (DG); * */ import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.text.NumberFormat; import java.util.HashMap; import java.util.Set; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTable; import javax.swing.Timer; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.labels.StandardPieItemLabelGenerator; import org.jfree.chart.plot.PiePlot; import org.jfree.data.general.DefaultPieDataset; import org.jfree.ui.RefineryUtilities; import org.jfree.util.Log; import org.jfree.util.PrintStreamLogTarget; /** * A simple demonstration application showing how to create a pie chart using * data from a {@link DefaultPieDataset}. This chart has a lot of labels and * rotates, so it is useful for testing the label distribution algorithm. */ public class ModelReusePanel extends JFrame { /** * */ private static final long serialVersionUID = 1L; private String filePath = null; private DefaultPieDataset data1 = null; private String[][] data2 = null; /** * Default constructor. * * @param title * the frame title. * @throws IOException */ public ModelReusePanel(final String title, String filePath) throws IOException { super(title); this.filePath = filePath; JPanel panel = createPanel(); setContentPane(panel); } private JPanel createPanel() throws IOException { createDataSet(); // create the chart... final JFreeChart chart = ChartFactory.createPieChart("Reused Times", // chart // title data1, // dataset false, // include legend true, false); // set the background color for the chart... chart.setBackgroundPaint(new Color(222, 222, 255)); final PiePlot plot = (PiePlot) chart.getPlot(); plot.setBackgroundPaint(Color.white); plot.setCircular(true); plot.setLabelGenerator(new StandardPieItemLabelGenerator("{0} = {2}", NumberFormat.getNumberInstance(), NumberFormat.getPercentInstance())); plot.setNoDataMessage("No data available"); // add the chart to a panel... final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); String[] columnNames = { "Name", "Reuse Times" }; JTable table = new JTable(data2, columnNames); JPanel panel = new JPanel(); panel.add(chartPanel); panel.add(table); final Rotator rotator = new Rotator(plot); rotator.start(); return panel; } private void createDataSet() throws IOException { BufferedReader reader = new BufferedReader(new FileReader(new File(this.filePath))); String line = null; String name = null; int number = 0; HashMap<Integer, String> map = new HashMap<Integer, String>(); String[][] tempS = new String[100][2]; int lineNo = 0; while ((line = reader.readLine()) != null) { String[] sg = line.split(","); name = sg[0]; number = Integer.parseInt(sg[1]); tempS[lineNo][0] = name; tempS[lineNo][1] = sg[1]; // if (map.containsKey(number)) { String temp = map.get(number); map.remove(number); map.put(number, temp + ", " + name); } else { map.put(number, name); } lineNo++; } // load pie data data1 = new DefaultPieDataset(); Set<Integer> keys = map.keySet(); for (Integer key : keys) { data1.setValue(key + " times: " + map.get(key), key); } // load table data data2 = new String[lineNo + 1][2]; data2[0][0] = "Name"; data2[0][1] = "Reuse Times"; for (int i = 0; i < lineNo; i++) { data2[i + 1] = tempS[i]; } reader.close(); } /** * The rotator. * */ static class Rotator extends Timer implements ActionListener { /** * */ private static final long serialVersionUID = 1L; /** The plot. */ private PiePlot plot; /** The angle. */ private int angle = 270; /** * Constructor. * * @param plot * the plot. */ Rotator(final PiePlot plot) { super(100, null); this.plot = plot; addActionListener(this); } /** * Modifies the starting angle. * * @param event * the action event. */ public void actionPerformed(final ActionEvent event) { this.plot.setStartAngle(angle); this.angle = this.angle + 1; if (this.angle == 360) { this.angle = 0; } } } /** * Starting point for the demonstration application. * * @param args * ignored. * @throws IOException */ public static void main(final String[] args) throws IOException { Log.getInstance().addTarget(new PrintStreamLogTarget()); final ModelReusePanel demo = new ModelReusePanel("Pie Chart Demo 4", "C:\\Users\\chenhz\\Documents\\Thss SVN\\THSS JBPM\\log(new)BPMN\\BPMN2.0\\\\fragment.sta"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }