title: KeyListener doesn't work in JApplet
body: <p>I have a class (myKeyListener) that extends keyListener and a I have a JFrame.
  I added keyListener to my JFrame and it worked fine. But I had to change it to applet, so I changed JFrame to JInternalFrame and added this to a JApplet. (I didn't change anything else)
  now the keyListener doesn't listen. what should I do?</p>