render a checkbox in a Jtable

[Steeve Randria]

Hello,
I have a problem for rendering a checkbox in a JTable
I have a JTable wich contains 2 lines and one column
These lines are filled with an object Greetings that contains a string (typeMessage) and a boolean(etat) that I filled in a model by the return of a boolean method.
If the boolean returned is true, line 1 or 2 is checked according the result.
I would change the checkbox checked when i click on a line (not on a checkbox). When a checkbox is checked, the other must become not checked but i can ' t do it.

Here is my renderer:

   public class RendererTableAnnonce   extends DefaultTableCellRenderer// rendu de l ' interface Annonces
{
    private static final long serialVersionUID = 1L;
private  Border border = BorderFactory.createCompoundBorder(BorderFactory.createMatteBorder( 0, 0, 1, 0, Color.BLACK ),
          BorderFactory.createEmptyBorder( 3, 3, 3, 3 ) );// bordures des lignes de la jlist
JCheckBox checkBox = new JCheckBox();
public Component getTableCellRendererComponent(JTable table,
        Object value, boolean isSelected, boolean hasFocus, int row
        , int column) {
    
       JPanel panneau= new JPanel();// panneau dans la jlist
       panneau.setLayout(new BorderLayout());
       panneau.setBackground(table.getBackground());// recupere couleur de la jlist
       panneau.setOpaque(true);
 
        checkBox.setEnabled(table.isEnabled());
        
        checkBox.setFont(table.getFont());
        checkBox.setBackground(table.getBackground());
       
       if ( value instanceof Greetings ) { // permet de specifier que les lignes contiennent des messages(instance of permet de connaitre la classe d instanciation)
            
           Greetings annonces = (Greetings) value;
            
            
            if (annonces.isEtat()){
                
                checkBox.setSelected((annonces.isEtat()));  
            }
             JLabel label= new JLabel(annonces.getTypeMessage());// label qui contient le num de l emetteur
             panneau.add(label,BorderLayout.WEST);
             
             if(isSelected){
                   
                   panneau.setBackground(Color.CYAN);
                   checkBox.setBackground(Color.CYAN);
                   checkBox.setSelected(true);
                 if(checkBox.isSelected()){
                     
                     checkBox.setSelected(false);
                      System.out.println(annonces.isEtat());}
             }
                 
       }
      
      panneau.add(checkBox,BorderLayout.EAST);
     
      return panneau;
   }


} 

Thank you in advance for your help.
Ps: Sorry for my english

[Michael Dunn]

> When a checkbox is checked, the other must become not checked...

a recent thread here at the ranch, with a link to the solution

http://www.coderanch.com/t/510484/GUI/java/Help-JCheckBox-JTable-return-value

[Rob Spoor]

Check out the Javadoc of JTable. It has a link to a page of the Java Swing Tutorial on how to use JTables. I believe there is a section on renderers / editors. In short, if your TableModel returns Boolean.class for a column you don't need to change a thing; JTable will automatically use a check box for that column.