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/*
* Copyright (c) 1999, 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
* @bug 4205440
* @summary When ObjectInputStream.inputClassDescriptor calls its protected
* resolveClass, if a NoClassDefFoundError is thrown, that Error should be
* propagated to the caller, instead of being trapped and transformed into
* a ClassNotFoundException for the class being resolved.
* @author Peter Jones
*
* @build NoClassDefFoundErrorTrap
* @run main NoClassDefFoundErrorTrap
*/
import java.io.*;
public class NoClassDefFoundErrorTrap {
private static NoClassDefFoundError ncdfe;
public interface Bar {}
public static class Foo implements Bar, java.io.Serializable {}
/**
* Test subclass of ObjectInputStream that overrides resolveClass
* to throw a NoClassDefFoundError if our test class "Foo" is to
* be resolved.
*/
public static class TestObjectInputStream extends ObjectInputStream {
public TestObjectInputStream(InputStream in)
throws IOException
{
super(in);
}
protected Class resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
String name = desc.getName();
if (name.equals(Foo.class.getName())) {
ncdfe = new NoClassDefFoundError("Bar");
throw ncdfe;
} else {
return super.resolveClass(desc);
}
}
}
public static void main(String[] args) {
System.err.println("\nRegression test for bug 4205440\n");
try {
/*
* Serialize a Foo instance to a byte array.
*/
Foo foo = new Foo();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bout);
out.writeObject(foo);
byte[] stream = bout.toByteArray();
/*
* Deserialize the Foo instance using our test subclass of
* ObjectInputStream that will throw NoClassDefFoundError.
*/
ByteArrayInputStream bin = new ByteArrayInputStream(stream);
ObjectInputStream in = new TestObjectInputStream(bin);
/*
* The test succeeds if we get the NoClassDefFoundError.
*/
try {
in.readObject();
} catch (NoClassDefFoundError e) {
if (e == ncdfe) {
System.err.println("TEST PASSED: " + e.toString());
} else {
throw e;
}
}
} catch (Exception e) {
System.err.println("\nTEST FAILED:");
e.printStackTrace();
throw new RuntimeException("TEST FAILED: " + e.toString());
}
}
}
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