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/*
* Copyright (c) 2019, 2021, 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.
*/
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Path;
import java.nio.file.Paths;
/*
* @test
* @bug 8231924 8233091 8233272
* @summary Confirm load (but not link) behavior of Class.forName()
* @library /test/lib
*
* @compile MissingClass.java Container.java
*
* @run driver jdk.test.lib.helpers.ClassFileInstaller -jar classes.jar Container Container$1
*
* @run main/othervm NonLinking init
* @run main/othervm NonLinking load
*/
/*
* The @compile and '@main ClassFileInstaller' tasks above create a classes.jar
* file containing the .class file for Container, but not MissingClass.
*/
public class NonLinking {
public static void main(String[] args) throws Throwable {
Path jarPath = Paths.get("classes.jar");
URL url = jarPath.toUri().toURL();
URLClassLoader ucl1 = new URLClassLoader("UCL1",
new URL[] { url },
null); // Don't delegate
switch(args[0]) {
case "init":
try {
// Trying to initialize Container without MissingClass -> NCDFE
Class.forName("Container", true, ucl1);
throw new RuntimeException("Missed expected NoClassDefFoundError");
} catch (NoClassDefFoundError expected) {
final String CLASSNAME = "MissingClass";
Throwable cause = expected.getCause();
if (!cause.getMessage().contains(CLASSNAME)) {
throw new RuntimeException("Cause of NoClassDefFoundError does not contain \"" + CLASSNAME + "\"", cause);
}
}
break;
case "load":
// Loading (but not linking) Container will succeed.
// Before 8233091, this fails with NCDFE due to linking.
Class.forName("Container", false, ucl1);
break;
default:
throw new RuntimeException("Unknown command: " + args[0]);
}
}
}
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