java.awt.event.KeyAdapter Maven / Gradle / Ivy
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This work corresponds to the API signatures of JSR 217: Personal Basis
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*/
package java.awt.event;
/**
* An abstract adapter class for receiving keyboard events.
* The methods in this class are empty. This class exists as
* convenience for creating listener objects.
*
* 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 can only have to define methods for events you care about.)
*
* Create a listener object using the extended class and then register it with
* a component using the component's addKeyListener
* method. When a key is pressed, released, or typed (pressed and released),
* the relevant method in the listener object is invoked,
* and the KeyEvent is passed to it.
*
* @author Carl Quinn
* @version 1.15 01/23/03
*
* @see KeyEvent
* @see KeyListener
* @see Tutorial: Writing a Key Listener
* @see Reference: The Java Class Libraries (update file)
*
* @since 1.1
*/
public abstract class KeyAdapter implements KeyListener
{
public KeyAdapter() { }
/**
* Invoked when a key has been typed.
* This event occurs when a key press is followed by a key release.
*/
public void keyTyped(KeyEvent e) { }
/**
* Invoked when a key has been pressed.
*/
public void keyPressed(KeyEvent e) { }
/**
* Invoked when a key has been released.
*/
public void keyReleased(KeyEvent e) { }
}