/*
* 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();
}
}
}