j'ai un AreaChart et je veux que sur l'axe des abscisses je met des String à partir d'un ListModel mais j'arrive pas à le faire voilà mon code:
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import java.awt.Color;
 
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import java.awt.geom.Ellipse2D;
import javax.swing.*;
/**
 * A simple demonstration application showing how to create a
 * stacked XY area chart.
 *
 */
public class Reviere extends JFrame {
    Number [] mini;
    Number [] maxi; 
    Number[] actu;
    Number[] futu;
    String ville = new String();
 
public Reviere(final String title,Number[] min, Number [] max, Number[] act, Number[] fut,ListModel nomP) {
        super(title);
        ville = title;
        mini=min;
        maxi= max;
        actu=act;
        futu= fut;
        CategoryDataset dataset = createDataset();
        JFreeChart chart = createChart(dataset);
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);
    }
 
public CategoryDataset createDataset() {
 
        final Number[][] data = new Number[3][maxi.length];
        for (int i=0; i<mini.length;i++)
        {
            data[0][i]= mini[i];
        }   
 
        for (int j=0; j<maxi.length;j++)
        {
            int n1 = maxi[j].intValue();
            int n2 = mini[j].intValue();
            Number n3 = n1-n2;
            data[1][j]= n3;
 
        }
        for (int j=0; j<maxi.length;j++)
        {
            int n1 = maxi[j].intValue();
            int n2 = mini[j].intValue();
            Number n3 = 5-(n1-n2)-n2;
            data[2][j]= n3;   
        }
        final CategoryDataset dataset = DatasetUtilities.createCategoryDataset(
            "Series ", "Pratique ", data
        );
        return dataset;
    }
 
    /**
     * Creates a sample chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return A sample chart.
     */
    public JFreeChart createChart(CategoryDataset dataset) {
 
        final JFreeChart chart = ChartFactory.createStackedAreaChart(
            ville,      // chart title
            "Pratiques",                // domain axis label
            "Notes",                   // range axis label
            dataset,                   // data
            PlotOrientation.VERTICAL,  // orientation
            true,                      // include legend
            true,
            false
        );
 
        chart.setBackgroundPaint(Color.white);
 
        final CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.setForegroundAlpha(0.5f);
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
 
        final CategoryAxis domainAxis = plot.getDomainAxis();
        domainAxis.setLowerMargin(0.0);
        domainAxis.setUpperMargin(0.0);
 
        // change the auto tick unit selection to integer units only...
        final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
 
        final CategoryItemRenderer renderer = plot.getRenderer();
        renderer.setItemLabelsVisible(true);
        renderer.setSeriesPaint(0,Color.GREEN);
 
        renderer.setSeriesPaint(2,Color.GREEN);
        renderer.setSeriesPaint(1,Color.BLUE);
        renderer.setShape(new Ellipse2D.Double(-3, -3, 6, 6));
        return chart;
 
    }
 
}