使用JFreeChart生成饼图,不做任何注释,只求应用,生成的饼图放在D:\\fruit.jpg

/** * 要是用JFreeChar生成饼图,不做任何注释,只求应用,生成的饼图放在D:\\fruit.jpg *  * 1.加入jcommon-1.0.5.jar和jfreechart-1.0.2.jar *  * 2.设置值 * dataset.setValue("苹果", 100); * dataset.setValue("梨子", 200); * dataset.setValue("葡萄", 300); * dataset.setValue("香蕉", 400); * dataset.setValue("荔枝", 500); *  * fos_jpg = new FileOutputStream("D:\\fruit.jpg"); */package com.bjpowernode.drp.statreport;import java.io.FileOutputStream;import java.io.IOException;import java.text.DecimalFormat;import java.text.NumberFormat;import org.jfree.chart.ChartFactory;import org.jfree.chart.ChartUtilities;import org.jfree.chart.JFreeChart;import org.jfree.chart.labels.StandardPieSectionLabelGenerator;import org.jfree.chart.plot.PiePlot3D;import org.jfree.data.general.DefaultPieDataset;public class PieCharDemo {public static void main(String[] args) throws IOException {DefaultPieDataset data = getDataSet();JFreeChart chart = ChartFactory.createPieChart3D("水果产量图",data,true,false,false);FileOutputStream fos_jpg = null;try {fos_jpg = new FileOutputStream("D:\\fruit.jpg");PiePlot3D plot = (PiePlot3D) chart.getPlot();plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}={1}({2})", NumberFormat.getNumberInstance(),new DecimalFormat("0.00%")));plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0}={1}({2})"));ChartUtilities.writeChartAsJPEG(fos_jpg, 1.0f, chart, 400, 300,null);} finally {try {fos_jpg.close();} catch (Exception e) {throw new RuntimeException("生成饼图失败!");}}}private static DefaultPieDataset getDataSet() {DefaultPieDataset dataset = new DefaultPieDataset();dataset.setValue("苹果", 100);dataset.setValue("梨子", 200);dataset.setValue("葡萄", 300);dataset.setValue("香蕉", 400);dataset.setValue("荔枝", 500);return dataset;}}