java.awt.event.KeyListener 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;
import 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 (pressedn and released). The relevant method in the listener
* object is then invoked, and the KeyEvent is passed to it.
*
* @author Carl Quinn
* @version 1.16 01/23/03
*
* @see KeyAdapter
* @see KeyEvent
* @see Tutorial: Writing a Key Listener
* @see Reference: The Java Class Libraries (update file)
*
* @since 1.1
*/
public interface KeyListener extends EventListener
{
/**
* Invoked when a key has been typed.
* See the class description for {@link KeyEvent} for a definition of
* a key typed event.
*/
public void keyTyped(KeyEvent e);
/**
* Invoked when a key has been pressed.
* See the class description for {@link KeyEvent} for a definition of
* a key pressed event.
*/
public void keyPressed(KeyEvent e);
/**
* Invoked when a key has been released.
* See the class description for {@link KeyEvent} for a definition of
* a key released event.
*/
public void keyReleased(KeyEvent e);
}