| /* |
| * Copyright (c) 2004, 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. |
| */ |
| |
| |
| /* Testcase that does a defineClass with a NULL name on HelloWorld.class */ |
| |
| import java.io.*; |
| |
| public class DefineClass extends ClassLoader { |
| public static void main(String args[]) { |
| DefineClass t = new DefineClass(); |
| t.run(args); |
| } |
| public void run(String args[]) { |
| Class n; |
| byte b[] = new byte[10000]; |
| int len = 0; |
| String cdir; |
| String cfile; |
| |
| /* Class is found here: */ |
| cdir = System.getProperty("test.classes", "."); |
| cfile = cdir + java.io.File.separator + "HelloWorld.class"; |
| |
| try { |
| /* Construct byte array with complete class image in it. */ |
| FileInputStream fis = new FileInputStream(cfile); |
| int nbytes; |
| do { |
| nbytes = fis.read(b, len, b.length-len); |
| if ( nbytes > 0 ) { |
| len += nbytes; |
| } |
| } while ( nbytes > 0 ); |
| } catch ( Throwable x ) { |
| System.err.println("Cannot find " + cfile); |
| x.printStackTrace(); |
| } |
| |
| /* Define the class with null for the name */ |
| n = defineClass(null, b, 0, len); |
| |
| /* Try to create an instance of it */ |
| try { |
| n.newInstance(); |
| } catch ( Throwable x ) { |
| x.printStackTrace(); |
| } |
| } |
| } |