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 /** 26 * Tests loading an archived class that has the same class name as one in the 27 * jimage. The class should normally fail to load since a classpath class is not 28 * allowed to have the same package name as a module in the jimage. However, 29 * if --limit-modules was used then archived class should be loaded. 30 */ 31 32 package jdk.test; 33 34 public class Main { 35 static final ClassLoader BOOT_LOADER = null; 36 static final ClassLoader PLATFORM_LOADER = ClassLoader.getPlatformClassLoader(); 37 static final ClassLoader SYS_LOADER = ClassLoader.getSystemClassLoader(); 38 39 public static void main(String[] args) throws Exception { 40 boolean shouldLoad = false; 41 ClassLoader expectedLoader = SYS_LOADER; 42 43 /* 44 * 3 Arguments are passed to this test: 45 * 1. testName: Name of the test being run. 46 * 2. className: Name of the class to load and instantiate. 47 * 3. shouldLoad: Either "true" or "false" to indicate whether the class should 48 * successfully load ("true" indicates --limit-modules was used.) 49 * The 4th argument is optional. It specifies the classloader. 50 */ 51 52 assertTrue(args.length <= 4); 53 String testName = args[0]; 54 String className = args[1].replace('/', '.'); 55 String shouldLoadName = args[2]; // "true" or "false" 56 String loaderName = "SYS"; 57 if (args.length == 4) { 58 loaderName = args[3]; 59 } 60 61 if (shouldLoadName.equals("true")) { 62 shouldLoad = true; 63 } else if (shouldLoadName.equals("false")) { 64 shouldLoad = false; 65 } else { 66 assertTrue(false); 67 } 68 69 if (loaderName.equals("SYS")) { 70 expectedLoader = SYS_LOADER; 71 } else if (loaderName.equals("EXT")) { 72 expectedLoader = PLATFORM_LOADER; 73 } else if (loaderName.equals("BOOT")) { 74 expectedLoader = BOOT_LOADER; 75 } 76 77 System.out.println(testName + ": class=" + className + " shouldLoad=" + 78 shouldLoadName + " by loader:" + expectedLoader); 79 80 // Try to load the specified class with the default ClassLoader. 81 Class<?> clazz = null; 82 try { 83 clazz = Class.forName(className); 84 } catch (ClassNotFoundException e) { 85 System.out.println(e); 86 } 87 88 if (clazz != null) { 89 // class loaded 90 if (shouldLoad) { 91 // Make sure we got the expected defining ClassLoader 92 ClassLoader actualLoader = clazz.getClassLoader(); 93 if (actualLoader != expectedLoader) { 94 throw new RuntimeException(testName + " FAILED: " + clazz + " loaded by " + actualLoader + 95 ", expected " + expectedLoader); 96 } 97 // Make sure we got the right version of the class. toString() of an instance 98 // of the overridden version of the class should return "hi". 99 if (actualLoader == SYS_LOADER) { 100 String s = clazz.newInstance().toString(); 101 if (!s.equals("hi")) { 102 throw new RuntimeException(testName + " FAILED: toString() returned \"" + s 103 + "\" instead of \"hi\"" ); 104 } 105 } 106 System.out.println(testName + " PASSED: class loaded as expected."); 107 } else { 108 throw new RuntimeException(testName + " FAILED: class loaded, but should have failed to load."); 109 } 110 } else { 111 // class did not load 112 if (shouldLoad) { 113 throw new RuntimeException(testName + " FAILED: class failed to load."); 114 } else { 115 System.out.println(testName + " PASSED: ClassNotFoundException thrown as expected"); 116 } 117 } 118 } 119 120 static void assertTrue(boolean expr) { 121 if (!expr) 122 throw new RuntimeException("assertion failed"); 123 } 124 }