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 * 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,

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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="http://java.sun.com/docs/books/tutorial/post1.0/ui/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);

}