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Sorry, I do NOT see a constructor for the MyClass class.
Are you talking about what is done in the main() method?


Suggestion: move all the GUI creation code from the main() method to a...

What does the constructor for MyClass do to make any GUI that you can see?

The forum's software/server has problems occasionally. You now have 3 copies here

How do you know if a key listener method is called? None of them call println to print out a message.

Where...

The component needs the focus to be able to receive key strokes.
key binding is a more reliable way to receive key strokes.

Post a small, complete program that compiles, executes and shows the...