Java tutorial
package org.jfree.chart.demo; import java.awt.Dimension; import javax.swing.JPanel; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.labels.StandardCategoryToolTipGenerator; import org.jfree.chart.plot.SpiderWebPlot; import org.jfree.chart.title.LegendTitle; import org.jfree.chart.title.TextTitle; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RectangleEdge; import org.jfree.ui.RefineryUtilities; public class SpiderWebChartDemo1 extends ApplicationFrame { private static final long serialVersionUID = 1L; public SpiderWebChartDemo1(String s) { super(s); JPanel jpanel = createDemoPanel(); jpanel.setPreferredSize(new Dimension(500, 270)); setContentPane(jpanel); } private static CategoryDataset createDataset() { String s = "First"; String s1 = "Second"; String s2 = "Third"; String s3 = "Category 1"; String s4 = "Category 2"; String s5 = "Category 3"; String s6 = "Category 4"; String s7 = "Category 5"; DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(1.0D, s, s3); dataset.addValue(4D, s, s4); dataset.addValue(3D, s, s5); dataset.addValue(5D, s, s6); dataset.addValue(5D, s, s7); dataset.addValue(5D, s1, s3); dataset.addValue(7D, s1, s4); dataset.addValue(6D, s1, s5); dataset.addValue(8D, s1, s6); dataset.addValue(4D, s1, s7); dataset.addValue(4D, s2, s3); dataset.addValue(3D, s2, s4); dataset.addValue(2D, s2, s5); dataset.addValue(3D, s2, s6); dataset.addValue(6D, s2, s7); return dataset; } private static JFreeChart createChart(CategoryDataset categorydataset) { SpiderWebPlot plot = new SpiderWebPlot(categorydataset); plot.setStartAngle(54D); plot.setInteriorGap(0.40000000000000002D); plot.setToolTipGenerator(new StandardCategoryToolTipGenerator()); JFreeChart chart = new JFreeChart("Spider Web Chart Demo 1", TextTitle.DEFAULT_FONT, plot, false); LegendTitle legendtitle = new LegendTitle(plot); legendtitle.setPosition(RectangleEdge.BOTTOM); chart.addSubtitle(legendtitle); return chart; } public static JPanel createDemoPanel() { JFreeChart jfreechart = createChart(createDataset()); return new ChartPanel(jfreechart); } public static void main(String args[]) { SpiderWebChartDemo1 spiderwebchartdemo1 = new SpiderWebChartDemo1("SpiderWebChartDemo1"); spiderwebchartdemo1.pack(); RefineryUtilities.centerFrameOnScreen(spiderwebchartdemo1); spiderwebchartdemo1.setVisible(true); } }