1 /* 2 * Copyright (c) 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. 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 import sun.hotspot.WhiteBox; 25 26 public class CheckContainerized { 27 public static String OUTSIDE_OF_CONTAINER = 28 "CheckContainerized: Running outside of a container"; 29 public static String INSIDE_A_CONTAINER = 30 "CheckContainerized: Running inside a container"; 31 32 public static void main(String[] args) { 33 System.out.println("CheckContainerized: Entering"); 34 WhiteBox wb = WhiteBox.getWhiteBox(); 35 36 if (wb.isContainerized()) { 37 System.out.println(INSIDE_A_CONTAINER); 38 39 } else { 40 System.out.println(OUTSIDE_OF_CONTAINER); 41 } 42 } 43 } 44