[Java] JTable , scorrere righe

[JunkyFunki]

Salve,

di default le righe della tabella si possono scorrere con enter o con le frecce, io vorrei fare in modo che sia possibile scorrere le righe tramite i caratteri A ed I

ho provato il seguente codice ma non ottengo l'effetto desiderato

 Set<AWTKeyStroke> set, newSet;
             set = tabella.getFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
             newSet = new HashSet<AWTKeyStroke> (set);
             newSet.removeAll(set);       
             tabella.setFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, newSet);
         
             set = tabella.getFocusTraversalKeys (KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
             newSet = new HashSet<AWTKeyStroke> (set);       
          newSet.removeAll(set);
          tabella.setFocusTraversalKeys (KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, newSet);
        
            set = tabella.getFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
          newSet = new HashSet<AWTKeyStroke> (set);
          newSet.add (KeyStroke.getKeyStroke (KeyEvent.VK_A, 0));
          tabella.setFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, newSet);
        
          set = tabella.getFocusTraversalKeys (KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
          newSet = new HashSet<AWTKeyStroke> (set);
         newSet.add (KeyStroke.getKeyStroke (KeyEvent.VK_I, 0));
         tabella.setFocusTraversalKeys (KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, newSet);

aiuti?