How to process many buttons with one listener?

Question

Java

A lot of buttons are created on the panel by a cycle, these buttons are driven into a collection, these buttons are processed by one inner class that implements the ActionListener interface, that is, one handler processes many buttons.
The question is, how can I distinguish which button is pressed if it is without a name ??

Answer 1

The handler receives an event instance whose getSource() method returns the object on which the event occurred.

public class ClickListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
        e.getSource().setText("Clicked");
    }
}

Answer 2

ActionListener l = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {

                //кнопка которая была нажата
                JButton button = (JButton) e.getSource();

                //идентификатор действия - предпочтительно использовать его
                //естественно при создании кнопки необходимо установить этот идентификатор
                String actionCommand = button.getActionCommand();
                //или даже без кнопки можно
               String actionCommand1 = e.getActionCommand();
                
                //среднячковый вариант
                String name = button.getName();
                
                //крайний и отвратительный вариант
                String text = button.getText();
            }
        };

this listener should be added to each button and it should describe what needs to be done depending on the id.