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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       */
54      void itemStateChanged(ItemEvent e);
55  
56  }