/*
 
* Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
 
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 
*
 
* This code is free software; you can redistribute it and/or modify it
 
* under the terms of the GNU General Public License version 2 only, as
 
* published by the Free Software Foundation.
  
Oracle designates this
 
* particular file as subject to the "Classpath" exception as provided
 
* by Oracle in the LICENSE file that accompanied this code.
 
*
 
* This code is distributed in the hope that it will be useful, but WITHOUT
 
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 
* FITNESS FOR A PARTICULAR PURPOSE.
  
See the GNU General Public License
 
* version 2 for more details (a copy is included in the LICENSE file that
 
* accompanied this code).
 
*
 
* You should have received a copy of the GNU General Public License version
 
* 2 along with this work; if not, write to the Free Software Foundation,
 
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 
*
 
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 
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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 <code>KeyAdapter</code> class
 
* (overriding only the methods of interest).
 
* <P>
 
* The listener object created from that class is then registered with a
 
* component using the component's <code>addKeyListener</code>
 
* 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 <code>KeyEvent</code> is passed to it.
 
*
 
* @author Carl Quinn
 
*
 
* @see KeyAdapter
 
* @see KeyEvent
 
* @see<a href="https://docs.oracle.com/javase/tutorial/uiswing/events/keylistener.html">Tutorial: Writing a Key Listener</a>
 
*
 
* @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);
}