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Java example source code file (SubclassGC.java)
The SubclassGC.java Java example source code/* * Copyright (c) 2005, 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 6232010 * @summary this test checks that replacing SoftCache class with ConcurrentMap * in ObjectInputStream/ObjectOutputStream gives an opportunity to * classes which are inherited from OIS and OOS and loaded through * separete ClassLoaders be available for garbage collection * * @author Andrey Ozerov * @run main/othervm/policy=security.policy SubclassGC */ import java.io.*; import java.lang.ref.Reference; import java.lang.ref.ReferenceQueue; import java.lang.ref.WeakReference; import java.lang.reflect.Constructor; import java.net.URL; import java.net.URLClassLoader; public class SubclassGC { private static final long TIMEOUT = 1000; public static final void main(String[] args) throws Exception { System.err.println("\n Regression test for bug 6232010\n"); if (System.getSecurityManager() == null) { System.setSecurityManager(new SecurityManager()); } ClassLoader systemLoader = ClassLoader.getSystemClassLoader(); ClassLoader loader = new URLClassLoader(((URLClassLoader) systemLoader).getURLs(), systemLoader.getParent()); Class<? extends ObjectOutputStream> cl = Class.forName(SubclassOfOOS.class.getName(), false, loader).asSubclass(ObjectOutputStream.class); Constructor<? extends ObjectOutputStream> cons = cl.getConstructor(OutputStream.class); OutputStream os = new ByteArrayOutputStream(); ObjectOutputStream obj = cons.newInstance(os); final ReferenceQueue<Class queue = new ReferenceQueue Other Java examples (source code examples)Here is a short list of links related to this Java SubclassGC.java source code file: |
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