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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,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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="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);
}