public abstract class KeyAdapter extends Object implements KeyListener
Extend this class to create a KeyEvent
listener and override the
methods for the events of interest. (If you implement the
KeyListener
interface, you have to define all of the methods in
it. This abstract class defines null
methods for them all, so
you only have to define methods for events you care about.)
Create a listener object using the extended class and then register it
with a browser using the browser's addKeyListener
method. When a
keyboard event occurs, the relevant method in the listener object is
invoked and the KeyEvent is passed to it.
Constructor and Description |
---|
KeyAdapter() |
public void onKeyDown(KeyEvent e)
KeyListener
onKeyDown
in interface KeyListener
public void onKeyUp(KeyEvent e)
KeyListener
onKeyUp
in interface KeyListener
public void onKeyPress(KeyEvent e)
KeyListener
onKeyPress
in interface KeyListener