1 /*
   2  * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.awt.event;
  27 
  28 import java.util.EventListener;
  29 
  30 /**
  31  * The listener interface for receiving item events.
  32  * The class that is interested in processing an item event
  33  * implements this interface. The object created with that
  34  * class is then registered with a component using the
  35  * component's <code>addItemListener</code> method. When an
  36  * item-selection event occurs, the listener object's
  37  * <code>itemStateChanged</code> method is invoked.
  38  *
  39  * @author Amy Fowler
  40  *
  41  * @see java.awt.ItemSelectable
  42  * @see ItemEvent
  43  * @see <a href="http://docs.oracle.com/javase/tutorial/uiswing/events/itemlistener.html">Tutorial: Writing an Item Listener</a>
  44  *
  45  * @since 1.1
  46  */
  47 public interface ItemListener extends EventListener {
  48 
  49     /**
  50      * Invoked when an item has been selected or deselected by the user.
  51      * The code written for this method performs the operations
  52      * that need to occur when an item is selected (or deselected).
  53      * @param e the event to be processed
  54      */
  55     void itemStateChanged(ItemEvent e);
  56 
  57 }