Question

I need to listen to a Jbutton getting pressed however the implementation I have doesn’t seem correct. In the class that contains the JButton I have

public JButton button() {
    return button;
}

In the class (call it, listenerClass) II listener to the button

buttonClass.button().addActionListener(new buttonActionListener());

public class buttonActionListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
       //local method calls
    }
}

I need to have the listener in listenerClass because that class contains the logic and methods I require. I feel its not correct to publish the whole JButton. I’m not sure how to just publish the buttons actionListener then I can do what ever I like in listenerClass. The buttonClass doesn’t know anything about the listenerClass

Thanks in advance 🙂

Answer 1

One way to achieve this is to add custom methods to the buttonClass that delegate to the button. For example you could add a method called addSomethingHappenedListener that will internally call `button.addActionListener’ and the caller does not need to know about the details.

This way the caller does not even need to even know that it’s a button just that a certain event happened.