I want my JTable's headers do nothing!

HI
I have a JTable, and I listen when any cell has been stopped editing, I validate its content and throw a message if it's invalid.
All works fine when i click on any cell (or any other component then I cancel editing), but when i click on any of the column headers the editing cell just gets the value (and of course if it's invalid it takes it anyway).
i've tried:
-table.getTableHeader().setFocusable(false);
-table.getTableHeader().setEnabled(false);
-table.setTableHeader() = null; (i really need a header cos i catch column selection events)
So I think this is caused by some action that column headers do when clicked.
*How do i override or avoid column headers from doing anything?
* setFocusable(fasle) should work, am I applying it to the right object?
Thanks!!!

Well, it actually loses focus, I've seen it enter into the lost focus event's method (loses focus because i have when editing the focus is owned by the cellEditor), I 've compared objects and table headers are taken as the same object as the table.
It would be perfect if it would anything but I think it really does some things when is pressed, specifically it stops the editing of any cell.
I would like to know how to stop table headers from doing that.
Thanks in advance! =)

Similar Messages

Add JTable Row Headers At The End Of The Rows(At Right)?

hi all
i got this example for adding JTable Row Headers,but it adds the headers at the left(beginning of the row)
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import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.AbstractListModel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
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import javax.swing.ListCellRenderer;
import javax.swing.ListModel;
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fixed by:
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import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.ComponentOrientation;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListCellRenderer;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
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RowHeaderRenderer(JTable table) {
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public RowHeaderExample() {
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     at java.awt.Container.dispatchEventImpl(Container.java:1623)
     at java.awt.Window.dispatchEventImpl(Window.java:1590)
     at java.awt.Component.dispatchEvent(Component.java:3480)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
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     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:419)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
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     at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1113)
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     at javax.swing.JMenuItem.fireMenuDragMouseReleased(JMenuItem.java:585)
     at javax.swing.JMenuItem.processMenuDragMouseEvent(JMenuItem.java:482)
     at javax.swing.JMenuItem.processMouseEvent(JMenuItem.java:429)
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javax.swing.JTable$CellEditorRemover
I could really use some help here...this is frustrating as all get out
Thanks!

wow!!!! I guess posting to this forum really got my brain going and I think it's working just great now!
I figured out i was throwing some wrong exceptions, so i made exceptions that threw the message "Fine" to know when an exception was good. I used the finction table.removeEditor() to get rid of the TableEditorRemover error. I'll post the updated code for you all!
* Attendance Save Header
* @param pathname The relative path and filename
* @return Returns true if successful, false if not
public boolean saveHeader(String pathname){
    //if(table.getModel().getValueAt(table.getSelectedRow(), table.getSelectedColumn()).equals(null))
      //table.getModel().setValueAt("",table.getSelectedRow(), table.getSelectedColumn());
    //if(!(table.getSelectedColumn() == 0)) table.setColumnSelectionInterval(0,0);
    /*try{
      if (table.isEditing()) { //To keep last value while saving
        TableCellEditor tc = table.getCellEditor();
        // To cancel the editing
        //tc.cancelCellEditing();
        // Or to keep the editor's current value
        if(tc != null)tc.stopCellEditing();
    catch(Exception d){
      d.printStackTrace();
    try{
      FileOutputStream fos2 = new FileOutputStream(pathname + "/attendanceheader.dat");
      ObjectOutputStream oos2 = new ObjectOutputStream(fos2);
      table.removeEditor();
      TableColumnModel tcm = (TableColumnModel)table.getColumnModel();
      oos2.writeObject(tcm);
        //oos.writeObject(tm);
      oos2.close();
      fos2.close();
      table.setFocusable(true);
    catch(Exception e){
      System.out.println(e.getMessage());
      e.printStackTrace();
      return false;
    return true;
   * Load a file header
   * @param pathname The relative path and filename
   * @return Returns true if successful, false if not
public boolean loadHeader(String pathname){
    //create a JTableHeader to hold the model of the header
    TableColumnModel tcm = null;
    try{
      //create FileInputStream and ObjectInputStream go get the table header
      FileInputStream fis2 = new FileInputStream(pathname +
                                                 "/attendanceheader.dat");
      ObjectInputStream ois2 = new ObjectInputStream(fis2);
      //get the JTableHeader from the file
      tcm = (TableColumnModel) (ois2.readObject());
      //set the JTableHeader and close the input streams
      table.setColumnModel(tcm);
      ois2.close();
      fis2.close();
    catch(Exception e){
      try{
        //try to make the file if it didnt exist
        File outputFile2 = new File(pathname + "/attendanceheader.dat");
        if(outputFile2.exists()) throw new Exception("Fine");
        else{
          JTable temp = new JTable(table.getRowCount(), table.getColumnCount());
          table.setColumnModel(temp.getColumnModel());
          table.getColumnModel().getColumn(0).setHeaderValue("Last Name, First Name");
          saveHeader(pathname);
      catch(Exception f){
        System.out.println(e.getMessage());
        System.out.println(f.getMessage());
        if(f.getMessage().equals("Fine")) return true;
        return false;
    return true;
}

I want my JTable's headers do nothing!

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