Bonjour,
Dans un cas particulier , apres un clic dans une cellule gérée par
JTable , j'ai une exception issu du
handler de la table .
J'aimerai pourvoir etre capable de trapper cet evenement avant qu'il
soit pris en compte par le handler de la table

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at javax.swing.plaf.basic.BasicTableUI$Handler.mousePressed(Unknown
Source)
    at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at javax.swing.JComponent.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown
Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

ci joint le source de la classe JTableModule qui gere la table
J'esperai trapper l'évènement via un MouseHandler que je rajoute à ma
classe JTableModule .
Je le traite mais cependant malgré le dispose() , il est quand meme
pris en compte par le BasicTableUI$Handler
D'ou ma problématique .
Trapper cet évènement pour identifier pourquoi la source est invalide
avant qu,il soit pris en compte par BasicTableUI$Handler

Merci

package terri.gui.table;

/*
@(#)JTableModule.java    1.17 07/10/26
*
*/

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.plaf.basic.BasicTableUI;

import terri.InvokerUI;
import terri.entities.*;
import terri.gui.MessageWindow;
import terri.managers.file.*;
import terri.utilities.*;

import java.lang.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.awt.event.*;
import java.awt.*;
import java.beans.*;

public class JTableModule extends JTable {

    JScrollPane scrollPane;
    TableColumn tableColumn0;

    final int columnWidth0 = 30;

    Logger logger;

    JTableModule jTableModule;

    TableColumnModel tableColumnModel;

    MouseListener[] mls;

    class MyTableUI extends BasicTableUI {

        public MouseInputListener createMouseInputListener() {

            return mouseHandler;
        }

    }

    MyTableUI myTableUI;

    class MouseHandler extends MouseInputAdapter {

        public void mousePressed(MouseEvent e) {

            logger.log(Level.INFO,"source =" + e.getSource().toString());
            if (!e.getComponent().isValid()) {
               logger.log(Level.INFO,"Component Source invalid, evt
consumed");
                e.consume();
            }
            else
                super.mousePressed(e);
            logger.log(Level.INFO,"Mouse pressed (# of clicks: "
                   + e.getClickCount() + ")");

       }

        public void mouseReleased(MouseEvent e) {

            logger.log(Level.INFO,"source =" + e.getSource().toString());
            if (!e.getComponent().isValid()) {
               logger.log(Level.INFO,"Component Source invalide, evt
consumed");
               e.consume();
            }
            else
                super.mouseReleased(e);
           logger.log(Level.INFO,"Mouse released (# of clicks: "
                   + e.getClickCount() + ")");

       }

    }

   MouseHandler  mouseHandler;

    class ListSelectionModelTableModule extends DefaultListSelectionModel
{

        public boolean isSelectedIndex(int index) {
            boolean result;
            result=super.isSelectedIndex(index);
            if (listSelectionColumnModel.getAnchorSelectionIndex() != 0) {
                result=false;
            }
//           logger.log(Level.INFO,"isSelected (" + index + ") result = " +
result);
            return result;
        }

    }

    ListSelectionModelTableModule listSelectionRowModelTableModule;
    ListSelectionModel listSelectionColumnModel;

    //Default cell editor
    DefaultCellEditor cellEditor = new DefaultCellEditor(new
JTextField()) {
        public void cancelCellEditing() {
            logger.log(Level.INFO,"cancel editing");
            super.cancelCellEditing();
        }
        public boolean stopCellEditing() {
            logger.log(Level.INFO,"stop editing");
            return super.stopCellEditing();
        }

        public Component getTableCellEditorComponent(JTable table, Object
value, boolean isSelected, int row, int column){
            logger.log(Level.INFO,"getTableCellEditorComponent with value : " +
value + " row :" + row + " column :" + column);
            return super.getTableCellEditorComponent(table, value, isSelected,
row,column);
        }

    };

    // Cell renderer used by column 0 with specifics background and
foreground colors.
    DefaultTableCellRenderer col0Renderer =
    new DefaultTableCellRenderer() {
        Color beige = new Color(245, 245, 220);
        public void setValue(Object value) {
           setBackground(beige);
            setForeground(Color.black);
           super.setValue(value);
        }
    };

    public JTableModule(AbstractTableModel dataModel) {

        int indexMouseListener;

       //logger
         logger= Logger.getLogger("terri.gui.table.JTableModule");

         //set the common log file handler
       logger.addHandler(InvokerUI.getCommonLogFileHandler());

       //initialize the list , index  of the model
       logger.log(Level.INFO,"new JTableModule");

       //Affect the tableModel
       setModel(dataModel);
       logger.log(Level.INFO,"setModel");

       //Column0 specifications
       specifyColumn0();
       logger.log(Level.INFO,"specifyColumn0");

       //specific editor
       //this.setCellEditor(cellEditor);

       putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
       logger.log(Level.INFO,"putClientProperty");

       //list selection model for excel selection row behavior
       jTableModule=this;
       tableColumnModel=this.getColumnModel();
       listSelectionColumnModel=tableColumnModel.getSelectionModel();
       listSelectionRowModelTableModule= new
ListSelectionModelTableModule();
       this.setSelectionModel(listSelectionRowModelTableModule);

       //selection behavior
       this.setRowSelectionAllowed(true);
       this.setCellSelectionEnabled(true);
       this.setColumnSelectionAllowed(false);

          //mouse Handler for TableUI
          //mouseHandler=new MouseHandler();
       //this.setUI(myTableUI);

       //trap mouse events for debugging
       /*
       mouseHandler=new MouseHandler();
       mls = (MouseListener[])
(this.getListeners(MouseListener.class));
       for (indexMouseListener=0;indexMouseListener<
mls.length;indexMouseListener++)
           this.removeMouseListener(mls[indexMouseListener]);
       this.addMouseListener(mouseHandler);
       */

       // Affect a scrollPane
       scrollPane = new JScrollPane(this);
       logger.log(Level.INFO,"fin new JTableModule");

    };

    public JScrollPane getScrollPane() { return scrollPane; }

    //render specifications for column 0
    private void specifyColumn0() {

        // max size and not resizable with gray color
       tableColumn0= this.getColumn(" ");
        tableColumn0.setMaxWidth(columnWidth0);
        tableColumn0.setResizable(false);
        tableColumn0.setCellRenderer(col0Renderer);

    }

    //special views behaviours to add
    public void tableChanged(TableModelEvent e ) {

        super.tableChanged(e);
    }

}