Jtable Header's border disappear after placing an icon on it

I tried this in java 1.4
it works fine but the border between the headers of my JTable diappear
Anyone knows why?
ImageIcon icon = new ImageIcon(pathoficon);
DefaultTableCellRenderer headerRenderer =new DefaultTableCellRenderer();
headerRenderer.setIcon(pathoficon);
TableColumnModel colmod = jtable.getColumnModel();
colmod.getColumn(col).setHeaderRenderer(headerRenderer);
jtable.getTableHeader().resizeAndRepaint();

Its because DefaultTableCellRenderer isn't quite the mustard for a header renderer. Mine is shown below, the crucial line being setBorder(UIManager.getBorder("TableHeader.cellBorder"));
private class SortHeaderRenderer extends    DefaultTableCellRenderer
    RenderInfo r_;
    SortHeaderRenderer(RenderInfo r)
      r_ = r;
public Component getTableCellRendererComponent(javax.swing.JTable table,
                                               Object value,
                                               boolean isSelected,
                                               boolean hasFocus,
                                               int     row,
                                               int     column)
      if (table != null)
        JTableHeader header = table.getTableHeader();
        if (header != null)
          setForeground(header.getForeground());
          setBackground(header.getBackground());
          setFont(header.getFont());
      setText((value == null) ? "" : value.toString());
      setBorder(UIManager.getBorder("TableHeader.cellBorder"));
      setHorizontalAlignment(SwingConstants.CENTER);
      setHorizontalTextPosition(SwingConstants.LEFT);
      // Check if we are the primary sort column and if so, which
      // direction the sort is in
      if ((orderItems_ != null) && (orderItems_.contains(r_)))
        if (sortDescending_)
          setIcon(sortDescending__.getIcon());
        else
          setIcon(sortAscending__.getIcon());
      else
        setIcon(null);
      return this;
}Never mind about anything else because that's specific to me.

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Jtable Header's border disappear after placing an icon on it

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