Adding Tooltip to JTable header

[Garandi Garandi]

I want to set tooltip for table header. I can see the tooltip when the table is loading data, but when loading data is done the tooltip does not show up.

  
class ColumnHeaderToolTips extends MouseMotionAdapter {
  // Current column whose tooltip is being displayed.
  // This variable is used to minimize the calls to setToolTipText().
  TableColumn curCol;
  // Maps TableColumn objects to tooltips
  Map tips = new HashMap();
  // If tooltip is null, removes any tooltip text.
  public void setToolTip(TableColumn col, String tooltip) {
    if (tooltip == null) {
      tips.remove(col);
    }
    else {
      tips.put(col, tooltip);
    }
  }
  public void mouseMoved(MouseEvent evt) {
    TableColumn col = null;
    JTableHeader header = (JTableHeader) evt.getSource();
    JTable table = header.getTable();
    TableColumnModel colModel = table.getColumnModel();
    int vColIndex = colModel.getColumnIndexAtX(evt.getX());
    // Return if not clicked on any column header
    if (vColIndex >= 0) {
      col = colModel.getColumn(vColIndex);
    }
    if (col != curCol) {
      header.setToolTipText( (String) tips.get(col));
      curCol = col;
    }
  }
}
[B]//This method is called from Constructor[/B]
public void setToolTipsForColumnHeader() {
    ColumnHeaderToolTips tips = new ColumnHeaderToolTips();
    JTableHeader header = _tableCDR.getTableHeader();
    // Assign a tooltip for each of need  columns
    for (int c = 0; c < _tableCDR.getColumnCount(); c++) {
      TableColumn col = _tableCDR.getColumnModel().getColumn(c);
      if (c == 0 || c == 1 || c == 2 || c == 5 || c == 6 || c == 11 || c == 12) {
        tips.setToolTip(col, "Can be sorted");
      }
    }
    header.addMouseMotionListener(tips);
  }

Thank you in advance
Garandi
[ August 14, 2003: Message edited by: Garandi Garandi ]

[Garandi Garandi]

The above code works, all I did I set the size of columns first and then set the tooltip and everything looks fine.
Thank you
Garandi