Java actionListener for a nameless JButton?

for (int i = 65; i < 91; i++){
     alphabetPanel.add(new JButton("<html><center>" + (char)i));
}

ActionListener listener = something;

for (int i = 65; i < 91; i++){
     JButton button = new JButton("<html><center>" + (char)i);
     button.addActionListener( listener );
     alphabetPanel.add(button);
}

for (int i = 65; i < 91; i++){
     JButton button = new JButton("<html><center>" + (char)i));
     button.addActionListener( new ButtonListener());
     alphabetPanel.add(button);
}

class ButtonListener implements ActionListener {
     ButtonListener() {
     }
     public void actionPerformed(ActionEvent e) {
         //TODO:
     }
}

button.setName((char)i)); // or button.setName(i);

alphabetPanel.add(new JButton("<html><center>" + (char)i) {{
    addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            ...
        }
    });
}});

alphabetPanel.add(new JButton(new AbstractAction("<html><center>" + (char)i) {
    public void actionPerformed(ActionEvent event) {
        ...
    }
}));

Form alphabetForm = new Form(alphabetPanel);
for (char c='A'; c <= 'Z'; ++c) {
    alphabetForm.button("<html><center>" + c, new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            ...
        }
    });
}

new JButton().addActionListener(new ActionListener(){
    		@Override
    		public void actionPerformed(ActionEvent arg0) {
    			// TODO your action
    		}
    	});

for (int i = 65; i < 91; i++){
    	     alphabetPanel.add(new JButton("<html><center>" + (char)i).addActionListener(new ActionListener(){
        			@Override
        			public void actionPerformed(ActionEvent arg0) {
        				// TODO your action
        			}
        		}));
    	}