| /* |
| * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib .. |
| * @compile p2/c2.java |
| * @compile p4/c4.java |
| * @build sun.hotspot.WhiteBox |
| * @compile/module=java.base java/lang/ModuleHelper.java |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI CCE_module_msg |
| */ |
| |
| import java.io.*; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import static jdk.test.lib.Asserts.*; |
| |
| // Test that the message in a runtime ClassCastException contains module info. |
| public class CCE_module_msg { |
| private static final Path CLASSES_DIR = Paths.get("classes"); |
| |
| public static void main(String[] args) throws Throwable { |
| // Should not display version |
| invalidObjectToDerived(); |
| // Should display version |
| invalidClassToString(); |
| // Should display customer class loader |
| invalidClassToStringCustomLoader(); |
| } |
| |
| public static void invalidObjectToDerived() { |
| java.lang.Object instance = new java.lang.Object(); |
| int left = 23; |
| int right = 42; |
| try { |
| for (int i = 0; i < 1; i += 1) { |
| left = ((Derived) instance).method(left, right); |
| } |
| throw new RuntimeException("ClassCastException wasn't thrown, test failed."); |
| } catch (ClassCastException cce) { |
| System.out.println(cce.getMessage()); |
| if (!cce.getMessage().contains("java.base/java.lang.Object cannot be cast to Derived")) { |
| throw new RuntimeException("Wrong message: " + cce.getMessage()); |
| } |
| } |
| } |
| |
| public static void invalidClassToString() throws Throwable { |
| // Get the java.lang.Module object for module java.base. |
| Class jlObject = Class.forName("java.lang.Object"); |
| Object jlObject_jlM = jlObject.getModule(); |
| assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null"); |
| |
| // Get the class loader for CCE_module_msg and assume it's also used to |
| // load classes p1.c1 and p2.c2. |
| ClassLoader this_cldr = CCE_module_msg.class.getClassLoader(); |
| |
| // Define a module for p2. |
| Object m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" }); |
| assertNotNull(m2x, "Module should not be null"); |
| ModuleHelper.DefineModule(m2x, false, "9.0", "m2x/there", new String[] { "p2" }); |
| ModuleHelper.AddReadsModule(m2x, jlObject_jlM); |
| |
| try { |
| ModuleHelper.AddModuleExportsToAll(m2x, "p2"); |
| Object p2Obj = new p2.c2(); |
| System.out.println((String)p2Obj); |
| throw new RuntimeException("ClassCastException wasn't thrown, test failed."); |
| } catch (ClassCastException cce) { |
| String exception = cce.getMessage(); |
| System.out.println(exception); |
| if (exception.contains("module_two/p2.c2") || |
| !(exception.contains("module_two@") && |
| exception.contains("/p2.c2 cannot be cast to java.base/java.lang.String"))) { |
| throw new RuntimeException("Wrong message: " + exception); |
| } |
| } |
| } |
| |
| public static void invalidClassToStringCustomLoader() throws Throwable { |
| // Get the java.lang.Module object for module java.base. |
| Class jlObject = Class.forName("java.lang.Object"); |
| Object jlObject_jlM = jlObject.getModule(); |
| assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null"); |
| |
| // Create a customer class loader to load class p4/c4. |
| URL[] urls = new URL[] { CLASSES_DIR.toUri().toURL() }; |
| ClassLoader parent = ClassLoader.getSystemClassLoader(); |
| MyURLClassLoader myCldr = new MyURLClassLoader("MyClassLoader", urls, parent); |
| |
| try { |
| // Class p4.c4 should be defined to the unnamed module of myCldr |
| Class p4_c4_class = myCldr.loadClass("p4.c4"); |
| Object c4Obj = p4_c4_class.newInstance(); |
| System.out.println((String)c4Obj); |
| throw new RuntimeException("ClassCastException wasn't thrown, test failed."); |
| } catch (ClassCastException cce) { |
| String exception = cce.getMessage(); |
| System.out.println(exception); |
| if (!exception.contains("MyClassLoader//p4.c4 cannot be cast to java.base/java.lang.String")) { |
| throw new RuntimeException("Wrong message: " + exception); |
| } |
| } |
| } |
| } |
| |
| class Derived extends java.lang.Object { |
| public int method(int left, int right) { |
| return right; |
| } |
| } |
| |
| class MyURLClassLoader extends URLClassLoader { |
| public MyURLClassLoader(String name, |
| URL[] urls, |
| ClassLoader parent) { |
| super(name, urls, parent); |
| } |
| |
| public Class loadClass(String name) throws ClassNotFoundException { |
| if (!name.equals("p4.c4")) { |
| return super.loadClass(name); |
| } |
| byte[] data = getClassData(name); |
| return defineClass(name, data, 0, data.length); |
| } |
| |
| byte[] getClassData(String name) { |
| try { |
| String TempName = name.replaceAll("\\.", "/"); |
| String currentDir = System.getProperty("test.classes"); |
| String filename = currentDir + File.separator + TempName + ".class"; |
| FileInputStream fis = new FileInputStream(filename); |
| byte[] b = new byte[5000]; |
| int cnt = fis.read(b, 0, 5000); |
| byte[] c = new byte[cnt]; |
| for (int i=0; i<cnt; i++) c[i] = b[i]; |
| return c; |
| } catch (IOException e) { |
| return null; |
| } |
| } |
| } |