Where did you get that code, kenny? If it's provided as a sample of bad code that you have to improve, fine. But as an example of Swing and
Java coding, it's atrocious.
For making an identity comparison using the
== operator, casting is redundant. And since casting isn't needed, neither is the
instanceof test.
And apart from all that, it suggests that a class having some other purpose of its own implements ActionListener, which is usually bad style.