private void moveSelection(final KeyEvent e, final int delta) {
      int leadIndex = mySelectionModel.getLeadSelectionIndex();
      int newLeadIndex = leadIndex + delta;
      if (newLeadIndex >= 0 && newLeadIndex < getCellCount()) {
        if ((e.getModifiers() & KeyEvent.SHIFT_MASK) != 0) {
          mySelectionModel.setSelectionInterval(mySelectionModel.getAnchorSelectionIndex(), newLeadIndex);
        }
        else {
          mySelectionModel.setSelectionInterval(newLeadIndex, newLeadIndex);
        }
      }
    }
private void moveSelection(final KeyEvent e, final int delta)