Bonjour,

J'ai réussi à afficher un graphe avec ce code :

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
 
import javax.swing.JFrame;
 
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
/**
 * 
 * 
 */
public class Graph extends ApplicationFrameBis {
 
    /**
     *
     *
     * @param title  the frame title.
     */
    public Graph(final String title, String chart_title, String[] strColValues, String unit ) {
        super(title);
        final CategoryDataset dataset = createDataset(chart_title,strColValues);
        final JFreeChart chart = createChart(dataset, chart_title, unit);
 
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new Dimension(1000, 270));
        setContentPane(chartPanel);
 
    }
 
    /**
     * Creates a sample dataset.
     * 
     * @return The dataset.
     */
    private CategoryDataset createDataset(String chart_title, String[] strColValues ) {
 
        // row keys...
        final String series1 = chart_title;
        //final String series2 = "Second";
        //final String series3 = "Third";
 
        final String type[] = new String[100];
        for(int j=0; j<strColValues.length;j++){
        	type[j] = Integer.toString(j+1);
        }
 
        // create the dataset...
        final DefaultCategoryDataset dataset = new DefaultCategoryDataset();
 
        for(int i=0; i<strColValues.length;i++){
        	dataset.addValue(Double.parseDouble(strColValues[i]), series1, type[i]);
        }
               return dataset;   
    }
 
    /**
     * Creates a sample chart.
     * 
     * @param dataset  a dataset.
     * 
     * @return The chart.
     */
    private JFreeChart createChart(final CategoryDataset dataset, String chart_title, String unit) {
 
        //Création du tableau
        final JFreeChart chart = ChartFactory.createLineChart3D(
            chart_title,       // chart title
            "Relevés",                    // domain axis label
            unit,                   // range axis label
            dataset,                   // data
            PlotOrientation.VERTICAL,  // orientation
            true,                      // include legend
            true,                      // tooltips
            false                      // urls
        );
 
 
        // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
//        final StandardLegend legend = (StandardLegend) chart.getLegend();
  //      legend.setDisplaySeriesShapes(true);
    //    legend.setShapeScaleX(1.5);
      //  legend.setShapeScaleY(1.5);
        //legend.setDisplaySeriesLines(true);
 
        chart.setBackgroundPaint(Color.white);
 
        final CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setRangeGridlinePaint(Color.white);
 
        // customise the range axis...
        final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        rangeAxis.setAutoRangeIncludesZero(true);
 
        // customise the renderer...
        final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
//        renderer.setDrawShapes(true);
 
        renderer.setSeriesStroke(
            0, new BasicStroke(
                2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                1.0f, new float[] {10.0f, 6.0f}, 0.0f
            )
        );
        renderer.setSeriesStroke(
            1, new BasicStroke(
                2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                1.0f, new float[] {6.0f, 6.0f}, 0.0f
            )
        );
        renderer.setSeriesStroke(
            2, new BasicStroke(
                2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                1.0f, new float[] {2.0f, 6.0f}, 0.0f
            )
        );
        // OPTIONAL CUSTOMISATION COMPLETED.
 
        return chart;
    }
}
Est ce que je peux afficher un autre graphique sur la même page ?

Comme d'habitude je vous remercie d'avance pour votre aide !