java.awt.event

public Interface KeyListener

Known Direct Implementers: javax.swing.plaf.basic.BasicButtonUI.KeyHandler, javax.swing.plaf.basic.BasicComboBoxUI.Handler, javax.swing.plaf.basic.BasicListUI.Handler, javax.swing.plaf.basic.BasicPopupMenuUI.MenuKeyboardHelper, javax.swing.plaf.basic.BasicTableUI.KeyHandler, javax.swing.plaf.basic.BasicTreeUI.Handler, java.awt.AWTEventMulticaster, java.awt.event.KeyAdapter
Imports: java.util.EventListener

The listener interface for receiving keyboard events (keystrokes). The class that is interested in processing a keyboard event either implements this interface (and all the methods it contains) or extends the abstract KeyAdapter class (overriding only the methods of interest).

The listener object created from that class is then registered with a component using the component's addKeyListener method. A keyboard event is generated when a key is pressed, released, or typed. The relevant method in the listener object is then invoked, and the KeyEvent is passed to it.

Author: Carl Quinn
Since: 1.1
See Also: KeyAdapter, KeyEvent, Tutorial: Writing a Key Listener

Method Summary

Modifier and Type	Method and Description
public void	keyPressed(KeyEvent the event to be processed e) Invoked when a key has been pressed.
public void	keyReleased(KeyEvent the event to be processed e) Invoked when a key has been released.
public void	keyTyped(KeyEvent the event to be processed e) Invoked when a key has been typed.

Method Detail

keyPressed back to summary

keyPressed	back to summary
public void keyPressed(KeyEvent e) Invoked when a key has been pressed. See the class description for `KeyEvent` for a definition of a key pressed event. Parameters e:KeyEvent the event to be processed

public void keyPressed(KeyEvent e)

Invoked when a key has been pressed. See the class description for KeyEvent for a definition of a key pressed event.

Parameters

e:KeyEvent: the event to be processed

keyReleased back to summary

keyReleased	back to summary
public void keyReleased(KeyEvent e) Invoked when a key has been released. See the class description for `KeyEvent` for a definition of a key released event. Parameters e:KeyEvent the event to be processed

public void keyReleased(KeyEvent e)

Invoked when a key has been released. See the class description for KeyEvent for a definition of a key released event.

Parameters

e:KeyEvent: the event to be processed

keyTyped back to summary

keyTyped	back to summary
public void keyTyped(KeyEvent e) Invoked when a key has been typed. See the class description for `KeyEvent` for a definition of a key typed event. Parameters e:KeyEvent the event to be processed

public void keyTyped(KeyEvent e)

Invoked when a key has been typed. See the class description for KeyEvent for a definition of a key typed event.

Parameters

e:KeyEvent: the event to be processed