Problema con popup menu

[trez]

Il mio codice è il seguente:

    private javax.swing.JPanel table;
    private java.awt.GridBagLayout tableLayout;
    private javax.swing.JLabel r;
    
    private javax.swing.JPopupMenu popup;
    private javax.swing.JMenuItem menuItem1;
    private javax.swing.JMenuItem menuItem2;
    private javax.swing.JMenuItem menuItem3;
    
    private class PopupListener extends MouseAdapter {
        private javax.swing.JPopupMenu popup;
        
        public PopupListener(javax.swing.JPopupMenu p){
            popup = p;
        }
        
        public void mousePressed(MouseEvent e) {
            maybeShowPopup(e);
        }

        public void mouseReleased(MouseEvent e) {
            maybeShowPopup(e);
        }

        private void maybeShowPopup(MouseEvent e) {
            if (e.isPopupTrigger()) {
                popup.show(e.getComponent(),
                           e.getX(), e.getY());
            }
        }
    }

    
   [...]     
        
        
        popup = new javax.swing.JPopupMenu();
        //Add listener to components that can bring up popup menus.
        java.awt.event.MouseListener popupListener = new PopupListener(popup);
        
        menuItem1 = new javax.swing.JMenuItem("Condividi");
        menuItem1.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                System.out.println("azione1");
                r.setBackground(Color.RED);
                r.repaint();
                System.out.println("RED");
            }
        });
        popup.add(menuItem1);
        menuItem2 = new javax.swing.JMenuItem("Modifica");
        menuItem2.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                System.out.println("azione2");
                r.setBackground(Color.BLUE);
                r.repaint();
                System.out.println("BLUE");
            }
        }); 
        popup.add(menuItem2);
        menuItem3 = new javax.swing.JMenuItem("Riferisci");
        menuItem3.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                System.out.println("azione3");
                r.setBackground(Color.GREEN);
                r.repaint();
                System.out.println("GREEN");
            }
        });
        popup.add(menuItem3);
        
        
        
        
        
        
        //Aggiungo i rettangoli
        for(int i = 0; i < 10; i++){
            javax.swing.JLabel r = new javax.swing.JLabel("0");
            r.setPreferredSize(new java.awt.Dimension(120,15));
            r.setBorder(BorderFactory.createEtchedBorder
                    (EtchedBorder.RAISED));
            r.setBackground(Color.red);
            r.setOpaque(true);
            
            r.addMouseListener(popupListener);
            
            
            c.gridx = 0;
            c.gridy = i;
            c.gridy = 0;
            tableLayout.setConstraints(r, c);
            table.add(r);
        }
        
        jScrollPane1.setViewportView(table); 

Il problema è che quando vado a fare:

menuItem3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("azione3");
r.setBackground(Color.GREEN);
r.repaint();
System.out.println("GREEN");
}

non mi cambia il colore, ma non entra nemmeno nell'ActionListener (controllato con le stampe che non appaiono).
Non riesco a risolvere il problema.
Suggerimenti?