getTableCellRendererComponent not called after the adding of new row

Question

I'm devloping a application with Java swing ,my problem is : if i'm adding a new row , the getTableCellRendererComponent not called , my code :

the create of table :

   public Tablecase() {

       SystemeBaseConnaissance = new LESSymptomesEnsembleEt();
       SystemeBaseConnaissance.lesSymptomesEnsembleEt.add("x");
       initComponents();
       jTable1.setTableHeader(null);
       jTable1.getColumn("Title 1").setCellRenderer(new brmcellrender());

       Model model = new Model();

       jTable1.setModel( model);
       model.addRow(new Object[]{"ss"});
       System.out.println(SystemeBaseConnaissance.lesSymptomesEnsembleEt.size());
    }

my Defaulttablemodel :

 class Model extends DefaultTableModel{

    public Model(){

        super();
     this.addRow(new Object[]{"sx"}  );    
       repaint();

    }

    @Override
    public void addRow(Object[] rowData) {
        super.addRow(rowData); //To change body of generated methods, choose Tools | Templates.
    }


}

my DefaultCellEditor :

    public class brmcelleditor extends DefaultCellEditor{

    public brmcelleditor(JTextField textField) {
        super(textField);
    }
    }


     public class brmcellrender extends DefaultTableCellRenderer{

    public brmcellrender() {
        super();
        System.out.println("mefgoudabrahim20.Tablecase.brmcellrender.<init>()");
    /**/
    }

    /*affichge */

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            System.out.println("mefgoudabrahim20.Tablecase.brmcellrender.<init>qsdqsdqsd()");
            CaseOfTable cas = new CaseOfTable() ; 
            return  ( cas) ;
        }



    }

A complete example using `setCellRenderer()` is examined [here](http://stackoverflow.com/q/17157915/230513). — trashgod, Mar 28 '16 at 15:44
If it's _not_ set, either by column or class, the default renderer will be used. — trashgod, Mar 28 '16 at 15:52
please whats reason for repaint() in DefaultTableModel, better should be search here Java Swing JTable DefaultTableModel, lots of Q&A in SSCCE / MCVE form, follows this idea (code in SSCCE / MCVE form) in future, for me this question isn't answerable — mKorbel, Mar 28 '16 at 16:32
Assuming that the [example cited](http://stackoverflow.com/q/17157915/230513) works for you, please edit your question to include a [mcve] that shows your current approach. — trashgod, Mar 28 '16 at 16:33

score 1 · Accepted Answer · answered Mar 28 '16 at 17:50

if i'm adding a new row , the getTableCellRendererComponent not called

The problem is not because you add a new row.

jTable1.getColumn("Title 1").setCellRenderer(new brmcellrender());
Model model = new Model();
jTable1.setModel( model);

The problem is that you set the model after you set the renderer. When you set the model of a table the TableColumnModel and all the TableColums are recreated which means you lose the custom renderers you added to the TableColumn.

The code should be:

Model model = new Model();
jTable1.setModel( model);
jTable1.getColumn("Title 1").setCellRenderer(new brmcellrender());

Also, you would not create a new model every time you add a row. The point of adding a row is to add it to the existing model.

Finally, class names SHOULD start with an upper case character. Fix your renderer name.

getTableCellRendererComponent not called after the adding of new row

1 Answers1