| /* |
| * Copyright (c) 2013, 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 |
| * @run main NoName |
| * @summary The reflection API should report parameters with no name properly. |
| */ |
| import java.lang.Class; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Parameter; |
| import java.lang.reflect.MalformedParametersException; |
| import java.lang.ClassLoader; |
| import java.lang.ClassNotFoundException; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| public class NoName { |
| |
| private static final byte[] NoName_bytes = { |
| -54,-2,-70,-66,0,0,0,52, |
| 0,18,10,0,3,0,15,7, |
| 0,16,7,0,17,1,0,6, |
| 60,105,110,105,116,62,1,0, |
| 3,40,41,86,1,0,4,67, |
| 111,100,101,1,0,15,76,105, |
| 110,101,78,117,109,98,101,114, |
| 84,97,98,108,101,1,0,1, |
| 109,1,0,5,40,73,73,41, |
| 86,1,0,16,77,101,116,104, |
| 111,100,80,97,114,97,109,101, |
| 116,101,114,115,1,0,0,1, |
| 0,1,98,1,0,10,83,111, |
| 117,114,99,101,70,105,108,101, |
| 1,0,14,69,109,112,116,121, |
| 78,97,109,101,46,106,97,118, |
| 97,12,0,4,0,5,1,0, |
| 9,69,109,112,116,121,78,97, |
| 109,101,1,0,16,106,97,118, |
| 97,47,108,97,110,103,47,79, |
| 98,106,101,99,116,0,33,0, |
| 2,0,3,0,0,0,0,0, |
| 2,0,1,0,4,0,5,0, |
| 1,0,6,0,0,0,29,0, |
| 1,0,1,0,0,0,5,42, |
| -73,0,1,-79,0,0,0,1, |
| 0,7,0,0,0,6,0,1, |
| 0,0,0,1,0,1,0,8, |
| 0,9,0,2,0,6,0,0, |
| 0,25,0,0,0,3,0,0, |
| 0,1,-79,0,0,0,1,0, |
| 7,0,0,0,6,0,1,0, |
| 0,0,2, |
| // Method Parameters attribute here |
| 0,10, |
| // attribute_length |
| 0,0,0,9, |
| // parameter_count |
| 2, |
| // first parameter name |
| 0,0, |
| // first parameter modifiers |
| 0,0, |
| // second parameter name |
| 0,12, |
| // second parameter modifiers |
| 0,0, |
| // end attribute |
| 0,1,0,13,0,0,0,2,0,14 |
| }; |
| |
| private static class InMemoryClassLoader extends ClassLoader { |
| public Class<?> defineClass(String name, byte[] b) { |
| return defineClass(name, b, 0, b.length); |
| } |
| }; |
| |
| private static final InMemoryClassLoader loader = new InMemoryClassLoader(); |
| |
| private final Class<?> noName; |
| |
| private NoName() throws ClassNotFoundException { |
| noName = loader.defineClass("EmptyName", NoName_bytes); |
| } |
| |
| public static void main(String... args) |
| throws NoSuchMethodException, IOException, ClassNotFoundException { |
| new NoName().run(); |
| } |
| |
| public void run() throws NoSuchMethodException { |
| final Class<?> cls = noName; |
| System.err.println("Trying " + cls); |
| final Method method = cls.getMethod("m", int.class, int.class); |
| final Parameter[] params = method.getParameters(); |
| System.err.println("Name " + params[0].getName()); |
| System.err.println("Name " + params[1].getName()); |
| } |
| |
| } |