PiePie

package com.huawei.jfreechart;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;

public class Pie {
public static void main(String[] args) {
System.out.println(System.getProperty("java.runtime.version"));
DefaultPieDataset dataset = getDataset();
JFreeChart Chart = creatChart(dataset);
creatImage(Chart, "e://", "city.jpg");
}

public static DefaultPieDataset getDataset() {
DefaultPieDataset localDefaultCategoryDataset = new DefaultPieDataset();
localDefaultCategoryDataset.setValue("北京", 1450);
localDefaultCategoryDataset.setValue("上海", 2000);
localDefaultCategoryDataset.setValue("广州", 1500);

localDefaultCategoryDataset.setValue("深圳", 1400);

return localDefaultCategoryDataset;
}

public static JFreeChart creatChart(DefaultPieDataset data) {
JFreeChart chart = ChartFactory.createPieChart3D("城市人口统计图", data, true,
false, false);
return chart;
}

public static void creatImage(JFreeChart chart, String path, String filename) {
Util.createJPEG(chart, path, filename);
}
}