Question

I’ve read several online articles which contradict each other. I thought this would be an example of an anonymous inner class:

button.addActionListener(new ActionListener() {
    public void actionPerfored(ActionEvent e) {
       // do something.
    }
});

However, I’ve also seen this described as an anonymous inner class:

ActionListener myListener = new ActionListener() { 
    public void actionPerformed(ActionEvent event) {
          // do something.
    }
};
button.addActionListener(myListener);

Which is which, and why? Thank you!

Answer 1

Both of them are. The second one is just assigned to a variable before being added as an action listener.

This is the same as the difference between

myList.add(new String("myString"));

and

String s = new String("myString");
myList.add(s);

it has nothing to do with anonymous classes.