radar graph in java

Hi Friend,

Try the following code:

import java.awt.*;
import org.jfree.ui.*;
import org.jfree.chart.*;
import org.jfree.chart.plot.*;
import org.jfree.chart.labels.*;
import org.jfree.chart.title.*;
import org.jfree.data.category.*;

  public class RadarChart extends ApplicationFrame {
    public DefaultCategoryDataset dataset;
    public SpiderWebPlot plot;
    public RadarChart(String title) {
        super(title);
        String series1 = "First";
        String series2 = "Second";
        String series3 = "Third";

        String category1 = "Category 1";
        String category2 = "Category 2";
        String category3 = "Category 3";
        String category4 = "Category 4";
        String category5 = "Category 5";

        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(1.0, series1, category1);
        dataset.addValue(4.0, series1, category2);
        dataset.addValue(3.0, series1, category3);
        dataset.addValue(5.0, series1, category4);
        dataset.addValue(5.0, series1, category5);

        dataset.addValue(5.0, series2, category1);
        dataset.addValue(7.0, series2, category2);
        dataset.addValue(6.0, series2, category3);
        dataset.addValue(8.0, series2, category4);
        dataset.addValue(4.0, series2, category5);

        dataset.addValue(4.0, series3, category1);
        dataset.addValue(3.0, series3, category2);
        dataset.addValue(2.0, series3, category3);
        dataset.addValue(3.0, series3, category4);
        dataset.addValue(6.0, series3, category5);
        SpiderWebPlot plot = new SpiderWebPlot(dataset);
        plot.setStartAngle(54);
        plot.setInteriorGap(0.40);
        plot.setToolTipGenerator(new StandardCategoryToolTipGenerator());
        JFreeChart chart = new JFreeChart("", TextTitle.DEFAULT_FONT, plot, false);
        ChartUtilities.applyCurrentTheme(chart);
            ChartPanel chartPanel = new ChartPanel(chart);
        this.plot = (SpiderWebPlot) chartPanel.getChart().getPlot();
        this.dataset = (DefaultCategoryDataset) plot.getDataset();
        chartPanel.setPreferredSize(new Dimension(500, 270));
        setContentPane(chartPanel);
        }
        public static void main(String[] args) {
        RadarChart demo = new RadarChart("Chart");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
          }
}

Here we have used jfreechart api.

Thanks