java饼状图生成

java饼状图生成实例，自己的demo,绝对详细

package test;
import java.awt.Font;
import java.io.FileOutputStream;
import java.io.IOException;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.title.Texttitle;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
	/**
	 * 该类用于演示最简单的柱状图生成
	 * @author Winter Lau
	 */
	public class BarChartDemo {
	                    public static void main（String[] args） throws IOException{
	                                         CategoryDataset dataset = getDataSet2（）;
	                                         
	                                         JFreeChart chart = ChartFactory.createBarChart3D（
	                                                             “水果产量图“ // 图表标题
	                                                             “水果“ // 目录轴的显示标签
	                                                             “产量“ // 数值轴的显示标签
	                                                             dataset // 数据集
	                                                             PlotOrientation.VERTICAL // 图表方向：水平、垂直
	                                                             true           // 是否显示图例（对于简单的柱状图必须是false）
	                                                             false          // 是否生成工具
	                                                             false           // 是否生成URL链接
	                                                             ）;
	                                         CategoryPlot plot=chart.getCategoryPlot（）;//获取图表区域对象
	                                         //设置标题文字
	                                         Texttitle text=chart.gettitle（）;
	                                         text.setFont（new Font（“黑体“Font.BOLD14））;
	                                         CategoryAxis domainAxis=plot.getDomainAxis（）;
	                                          //水平底部列表
	                                          domainAxis.setLabelFont（new Font（“黑体“Font.BOLD14））;
	                                          //水平底部标题
	                                          domainAxis.setTickLabelFont（new Font（“宋体“Font.BOLD12））;
	                                          //垂直标题
	                                          ValueAxis rangeAxis=plot.getRangeAxis（）;//获取柱状
	                                          rangeAxis.setLabelFont（new Font（“黑体“Font.BOLD15））;
	                                           chart.getLegend（）.setItemFont（new Font（“黑体“ Font.BOLD 15））;

	                                                                                                                                              
	                                         FileOutputStream fos_jpg = null;
	                       

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       1032  2012-08-28 18:15  demo\.classpath

     文件        285  2012-08-28 18:15  demo\.mymetadata

     文件       1222  2012-08-22 15:14  demo\.project

     文件        334  2012-08-22 14:51  demo\.settings\org.eclipse.jdt.core.prefs

     文件       6254  2012-08-28 18:20  demo\src\test\BarChartDemo.java

     文件       3414  2012-08-28 18:22  demo\src\test\PieChartDemo.java

     文件        912  2012-09-03 17:20  demo\WebRoot\index.jsp

     文件         39  2012-08-22 14:51  demo\WebRoot\meta-INF\MANIFEST.MF

     文件       3436  2012-08-28 18:20  demo\WebRoot\WEB-INF\classes\test\BarChartDemo.class

     文件       2278  2012-08-28 18:22  demo\WebRoot\WEB-INF\classes\test\PieChartDemo.class

     文件     231445  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\gnujaxp.jar

     文件    1117661  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\iText-2.1.5.jar

     文件     309920  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\jcommon-1.0.17.jar

     文件      13420  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\jfreechart-1.0.14-experimental.jar

     文件      72656  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\jfreechart-1.0.14-swt.jar

     文件    1461633  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\jfreechart-1.0.14.jar

     文件     121070  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\junit.jar

     文件      80054  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\servlet.jar

     文件      15581  2011-11-20 22:40  demo\WebRoot\WEB-INF\lib\swtgraphics2d.jar

     文件        375  2012-08-22 14:51  demo\WebRoot\WEB-INF\web.xml

     目录          0  2012-08-28 18:15  demo\WebRoot\WEB-INF\classes\test

     目录          0  2012-08-28 18:15  demo\WebRoot\WEB-INF\classes

     目录          0  2012-08-22 17:36  demo\WebRoot\WEB-INF\lib

     目录          0  2012-08-22 16:17  demo\src\test

     目录          0  2012-08-27 14:39  demo\WebRoot\image

     目录          0  2012-08-22 14:51  demo\WebRoot\meta-INF

     目录          0  2012-08-22 14:51  demo\WebRoot\WEB-INF

     目录          0  2012-08-22 14:51  demo\.myeclipse

     目录          0  2012-08-22 14:51  demo\.settings

     目录          0  2012-08-22 14:52  demo\src

............此处省略5个文件信息