1 /* 2 * Copyright (c) 2015, 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 25 import sun.hotspot.WhiteBox; 26 27 public class HelloExt { 28 public static void main(String[] args) throws Throwable { 29 30 String className = "javax.annotation.processing.FilerException"; 31 Class cls = Class.forName(className); 32 33 ClassLoader loader = cls.getClassLoader(); 34 if (loader != ClassLoader.getPlatformClassLoader()) { 35 throw new java.lang.RuntimeException(className + " should be load by PlatformClassLoader but it is loaded by " + loader); 36 } 37 38 WhiteBox wb = WhiteBox.getWhiteBox(); 39 if (wb.isSharedClass(cls)) { 40 System.out.println("As expected, " + className + " is in shared space."); 41 } else { 42 throw new java.lang.RuntimeException(className + " is not in shared space."); 43 } 44 45 className = "[Ljava.lang.Comparable;"; 46 cls = Class.forName(className); 47 loader = cls.getClassLoader(); 48 if (loader != null) { 49 throw new java.lang.RuntimeException(className + " should be load by the NULL class loader but it is loaded by " + loader); 50 } 51 52 if (wb.isSharedClass(cls)) { 53 System.out.println("As expected, " + className + " is in shared space."); 54 } else { 55 throw new java.lang.RuntimeException(className + " is not in shared space."); 56 } 57 } 58 } 59