Inserting a button in a jfreechart graph

Question

I used a code in order to display a graph. I want to insert a button in this graph (Show details) that i will used in order to present some details about the graph .I tried with this code but an error appear:"cannot add to layout:constraint must be a string" thanks.

if(jCheckBox1.isSelected()){
    try{

      Statement statement = con.createStatement(rs.TYPE_FORWARD_ONLY,rs.CONCUR_READ_ONLY);
      String sql1 = "Select last_updated_by,(count(id_incident) )*100/(Select count(id_incident) from incident where Status like 'Closed' and open_time between '"+date1+"' and '"+date2+"')from incident  where  Status like 'Closed'and open_time between '"+date1+"' and '"+date2+"' group by last_updated_by";
      rs1 = statement.executeQuery(sql1);
      DefaultPieDataset pieDataset = new DefaultPieDataset(); 
      while(rs1.next()){      
      pieDataset.setValue( rs1.getString("last_updated_by"),rs1.getDouble(2));                        
 }
      JFreeChart chart = ChartFactory.createPieChart3D("Taux résolution par personne",  pieDataset, true, true, true); 
 PiePlot3D piePlot3d = (PiePlot3D) chart.getPlot();
     piePlot3d.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}={1}"));
  fenetre fen= new fenetre();
      JPanel pnl = new JPanel(new CardLayout()); 
   fen.setContentPane(pnl); 
fen.setVisible(true);
fen.setSize(500, 500); 
 showdetails = new JButton(new AbstractAction("showdetails") {

          @Override
          public void actionPerformed(ActionEvent e) {
              //To change body of generated methods, choose Tools | Templates.
          }
      }) ;

       ChartPanel cPanel1 = new ChartPanel(chart);    
        pnl.add(cPanel1,showdetails);
    File fichier = new File("C:\\Users\\Desktop\\résultat_application\\Taux résolution par personne de '"+date1+"' à '"+date2+"'.png"); 
       try { 
  ChartUtilities.saveChartAsPNG(fichier, chart, 400, 250); 
} catch (IOException e) { 
  e.printStackTrace(); 
}   
              }
           catch (Exception e) {
       JOptionPane.showMessageDialog(this,e);
              }
    }

Debug my code... Could you at least format your code properly ? — kebs, May 27 '15 at 11:21
Please update your [original question](http://stackoverflow.com/q/30461001/230513) with your revised approach. — trashgod, May 27 '15 at 15:42

score 0 · Answer 1 · answered May 27 '15 at 11:41

0

Error is in the line:

pnl.add(cPanel1,showdetails);

cPanel1 is a ChartPanel, showdetails is a Button - both are Components. However Container (from which JPanel inherits it's add methods) has no method that allows adding two components at once. What it does have, and the reason why it compiles is a method with the following signature:

add(Component comp, Object constraints)

And so it tries to match your button as a constraints object and decides that something is not right.

answered May 27 '15 at 11:41

Deltharis

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Deltharis thank you for your answer.but i don't undrestand what should i do? – jalel May 27 '15 at 13:22
@jalel Umm... Use an add method correctly - probably just `pnl.add(cPanel1); pnl.add(showdetails);` – Deltharis May 27 '15 at 13:31
i used it.the error disappear.but the button (show details) doesn't appear – jalel May 27 '15 at 14:00
@jalel, it's probably because the ChartPanel doesn't have a layout. Try `pnl.setLayout(new FlowLayout())`, and then add the button. – Eric Leibenguth May 27 '15 at 16:04

Inserting a button in a jfreechart graph

1 Answers1