Setting the Down Arrow Key. Help Needed.

Folks
I am having a problem.
I have a custom cell renderer which displays a list.
I am setting the focus of this list to the 1st element.
Now,when I press the down Arrow key,this doesnt seem to
go down nor the focus is coming downwards.
Have I overlooked anything? Can someone please help?
class MyListCellRenderer extends JPanel implements ListCellRenderer{
   private JLabel indexLabel;
   private JLabel imageAndText;
   public MyListCellRenderer(){
   indexLabel = new JLabel();
   imageAndText = new JLabel();
   setLayout(new FlowLayout(FlowLayout.LEFT,3,0));
   add(indexLabel);
   add(imageAndText);
   setOpaque(true);
public Component getListCellRendererComponent(
       JList list, Object value,int index,
       boolean isSelected, boolean cellHasFocus) {
// ** Get the Focus on the first Element.
list.setSelectedIndex(0);
list.grabFocus();
setBackground(isSelected ? Color.red : Color.blue);
final JList fJList = list;
// ** Now press the Down Arrow
final Action downAction = actionMap.get("selectNextRow");
     actionMap.put("selectNextRow", new AbstractAction() {
     public void actionPerformed(ActionEvent e) {
      if (fJList.getSelectedIndex() < fJList.getModel().getSize() - 1)
        downAction.actionPerformed(e);
     else{
        fJList.setSelectedIndex(0);
        fJList.ensureIndexIsVisible(0);

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Setting the Down Arrow Key. Help Needed.

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