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 32 /** 33 * Event sent when the application has become the foreground app, and when it is 34 * no longer the foreground app. 35 * 36 * @see AppForegroundListener#appRaisedToForeground(AppForegroundEvent) 37 * @see AppForegroundListener#appMovedToBackground(AppForegroundEvent) 38 * @since 9 39 */ 40 public final class AppForegroundEvent extends AppEvent { 41 42 /** 43 * Use serialVersionUID from JDK 9 for interoperability. 44 */ 45 private static final long serialVersionUID = -5513582555740533911L; 46 47 /** 48 * Constructs an {@code AppForegroundEvent}. 49 * 50 * @throws HeadlessException if {@link GraphicsEnvironment#isHeadless()} 51 * returns {@code true} 52 * @throws UnsupportedOperationException if Desktop API is not supported on 53 * the current platform 54 * @see Desktop#isDesktopSupported() 55 * @see java.awt.GraphicsEnvironment#isHeadless 56 */ 57 public AppForegroundEvent() { 58 } 59 }