KeyListener

[Bumsys]

How add KeyListener to JFrame?
Simply I want that when I press F5 the content of JFrame refresh.

 

[Bumsys]

I add JPanel to JFrame with setContentPane(panel) and KeyListener does
not work. If I do not write setContentPane(panel) then KeyListener
work normally. What is the reason?

 

[Andrew Thompson]

I add JPanel to JFrame with setContentPane(panel) and KeyListener does
not work. If I do not write setContentPane(panel) then KeyListener
work normally. What is the reason?

System.out.println( panel.isFocusable() );
System.out.println( panel.hasFocus() );

If that print out does not fix the problem for you,
you might try posting an SSCCE* of failing code.

* <http://pscode.org/sscce.html>