1 /* 2 * Copyright (c) 2016, 2017, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @key headful 27 * @bug 8022810 28 * @summary Device.getDisplayMode() doesn't report refresh rate on Linux in case 29 * of dual screen 30 * @run main CurrentDisplayModeTest 31 */ 32 33 import java.awt.*; 34 import java.util.Arrays; 35 import java.util.HashSet; 36 import java.util.Set; 37 38 public class CurrentDisplayModeTest { 39 public static void main(String[] args) { 40 GraphicsDevice[] screenDevices = GraphicsEnvironment. 41 getLocalGraphicsEnvironment().getScreenDevices(); 42 for (GraphicsDevice screenDevice : screenDevices) { 43 DisplayMode currentMode = screenDevice.getDisplayMode(); 44 System.out.println("current mode " + currentMode); 45 Set<DisplayMode> set = new HashSet<>( 46 Arrays.asList(screenDevice.getDisplayModes())); 47 if (!set.contains(currentMode)) { 48 throw new RuntimeException("Mode " + currentMode + 49 " is not found in the modes list " + set); 50 } 51 } 52 } 53 }