[Java] Austausch v. Chart durch remove!?

[Clubingman78]

Hi

häng hier schon seit Stunden fest...

Die Applikation hat auf der linken Seite ein JList. Bei Auswahl eines Wertes soll im Center des Frames ein Chart angezeigt werden. Funktioniert soweit nur bei der ersten Auswahl. Bei jeder weiteren frieren alle zuvor aufgerufenen Charts im Center ein u. das neu aufgerufene erscheint im Hintergrund. Ich hab schon alles Mögliche mit remove u. revalidate unternommen. Kann mir jemand sagen wo da der Fehler liegt!?

Gruss u. DANKE

Listener Klasse:

choseCompany = new JList(companyModel);
//         choseCompany.setVisibleRowCount(5); // display five rows at once
        companyPanel.add(choseCompany, BorderLayout.CENTER);
                
        choseCompany.setSelectionMode( ListSelectionModel.SINGLE_SELECTION );
        companyPanel.add(new JScrollPane(choseCompany));
        
        choseCompany.addListSelectionListener(
            new ListSelectionListener() // anonymous inner class
         {   
            public void valueChanged(ListSelectionEvent event)
            {
               if(event.getValueIsAdjusting()== false)
               {
                   //int which = choseCompany.getSelectedIndex();
                   String selectedCompany =  (String)choseCompany.getSelectedValue();
                   System.out.println("Chosen company: " +selectedCompany);
                   
                   oldContent.remove(centerPanel);
                   oldContent.revalidate();
                   Roi ratio = new Roi("Ratio Analysis", oldContent, selectedCompany);

Chart Klasse:

public class Roi  {

private JPanel chartContent;
private String company;

        public Roi(String title, JPanel c, String s) {
        //super(title);
        chartContent = c;
        company = s;
        
        JPanel centerPanel = createPanel();
        chartContent.remove(centerPanel);
        chartContent.revalidate();
        //chartPanel.setPreferredSize(new Dimension(500, 270));
        chartContent.add(centerPanel);
        //setContentPane(centerPanel);
        
    }

    private  CategoryDataset createDataset() {
        
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        Database db = new Database();
        try
        {
        String sql = "SELECT balance_sheet.tangible_assets, balance_sheet.`year` FROM balance_sheet, companies WHERE companies.company_name = '"+ company + "' AND companies.company_id = balance_sheet.company_id";
        db.request(sql);
        System.out.println("made request");
        

                        
            while (db.result.next())
            {
               System.out.println("found a result");
                int   value = db.result.getInt( "tangible_assets" );
               String  year = db.result.getString( "year" );  
                
              dataset.addValue(value, "Classes", year);
            }  
        }
        catch(SQLException e)
        {
            System.out.println("* Cannot create dataset! *");
            e.printStackTrace();
        }
         return dataset;
    }
    
    private static JFreeChart createChart(CategoryDataset dataset) {
        
        // create the chart...
        JFreeChart chart = ChartFactory.createLineChart(
            "ROI",   // chart title
            "Year",                       // domain axis label
            "Value",                   // range axis label
            dataset,                         // data
            PlotOrientation.VERTICAL,        // orientation
            false,                           // include legend
            true,                            // tooltips
            false                            // urls
        );

        //Subtitle
        chart.addSubtitle(new TextTitle(""));
        
        //Bottom text
        TextTitle source = new TextTitle(
            "" 
           
        );
        source.setFont(new Font("SansSerif", Font.PLAIN, 10));
        source.setPosition(RectangleEdge.BOTTOM);
        source.setHorizontalAlignment(HorizontalAlignment.RIGHT);
        chart.addSubtitle(source);
        
        //Background colour
        chart.setBackgroundPaint(Color.white);

        //Plot colours
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.setBackgroundPaint(Color.white);
        plot.setRangeGridlinePaint(Color.lightGray);

        // customise the range axis...
        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

        // customise the renderer...
        LineAndShapeRenderer renderer 
            = (LineAndShapeRenderer) plot.getRenderer();
        renderer.setShapesVisible(true);
        renderer.setDrawOutlines(true);
        renderer.setUseFillPaint(true);
        renderer.setFillPaint(Color.white);

        return chart;
    }
    
   public  JPanel createPanel() {
        JFreeChart chart = createChart(createDataset());
        return new ChartPanel(chart);
    }
}