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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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,

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 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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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.

 * <P>

 * Extend this class to create a <code>KeyEvent</code> listener

 * and override the methods for the events of interest. (If you implement the

 * <code>KeyListener</code> 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.)

 * <P>

 * Create a listener object using the extended class and then register it with

 * a component using the component's <code>addKeyListener</code>

 * method. When a key is pressed, released, or typed,

 * the relevant method in the listener object is invoked,

 * and the <code>KeyEvent</code> is passed to it.

 *

 * @author Carl Quinn

 *

 * @see KeyEvent

 * @see KeyListener

 * @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/keylistener.html">Tutorial: Writing a Key Listener</a>

 *

 * @since 1.1

 */

public abstract class KeyAdapter implements KeyListener {

    /**

     * 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) {}

}