1 /*
   2  * Copyright (c) 2016, 2018, 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.desktop;
  27 
  28 import java.awt.Desktop;
  29 import java.awt.GraphicsEnvironment;
  30 import java.awt.HeadlessException;
  31 import java.util.EventObject;
  32 
  33 /**
  34  * AppEvents are sent to listeners and handlers installed on the
  35  * {@link java.awt.Desktop} instance of the current desktop context.
  36  *
  37  * @since 9
  38  */
  39 public class AppEvent extends EventObject {
  40 
  41     /**
  42      * Use serialVersionUID from JDK 9 for interoperability.
  43      */
  44     private static final long serialVersionUID = -5958503993556009432L;
  45 
  46     /**
  47      * Constructs an {@code AppEvent}.
  48      *
  49      * @throws HeadlessException if {@link GraphicsEnvironment#isHeadless()}
  50      *         returns {@code true}
  51      * @throws UnsupportedOperationException if Desktop API is not supported on
  52      *         the current platform
  53      * @see Desktop#isDesktopSupported()
  54      * @see java.awt.GraphicsEnvironment#isHeadless
  55      */
  56     AppEvent() {
  57         super(Desktop.getDesktop());
  58     }
  59 }