?? piechartdemo1.java
字號:
/* ======================================
* JFreeChart : a free Java chart library
* ======================================
*
* Project Info: http://www.jfree.org/jfreechart/index.html
* Project Lead: David Gilbert (david.gilbert@object-refinery.com);
*
* (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
*
* 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.
*
* ------------------
* PieChartDemo1.java
* ------------------
* (C) Copyright 2002, 2003, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: PieChartDemo1.java,v 1.8 2003/09/02 10:11:26 mungady Exp $
*
* Changes
* -------
* 18-Apr-2002 : Version 1 (DG);
* 25-Jun-2002 : Removed unnecessary import (DG);
* 28-Aug-2002 : Centered frame on screen (DG);
* 11-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.Color;
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.DefaultPieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
/**
* A simple demonstration application showing how to create a pie chart using data from a
* {@link DefaultPieDataset}.
*
* @author David Gilbert
*/
public class PieChartDemo1 extends ApplicationFrame {
/**
* Default constructor.
*
* @param title the frame title.
*/
public PieChartDemo1(String title) {
super(title);
// create a dataset...
DefaultPieDataset data = new DefaultPieDataset();
data.setValue("One", new Double(43.2));
data.setValue("Two", new Double(10.0));
data.setValue("Three", new Double(27.5));
data.setValue("Four", new Double(17.5));
data.setValue("Five", new Double(11.0));
data.setValue("Six", new Double(19.4));
// create the chart...
JFreeChart chart = ChartFactory.createPieChart("Pie Chart Demo 1", // chart title
data, // data
true, // include legend
true,
false
);
// set the background color for the chart...
chart.setBackgroundPaint(Color.yellow);
PiePlot plot = (PiePlot) chart.getPlot();
plot.setSectionLabelType(PiePlot.NAME_AND_PERCENT_LABELS);
plot.setNoDataMessage("No data available");
plot.setItemLabelGenerator(new StandardPieItemLabelGenerator());
// add the chart to a panel...
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
PieChartDemo1 demo = new PieChartDemo1("Pie Chart Demo 1");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -