--- /dev/null 2016-08-09 16:48:04.000000000 +0300 +++ new/test/java/beans/Introspector/8159696/UnloadClassBeanInfo.java 2016-08-09 16:48:04.000000000 +0300 @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2016, 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.beans.BeanInfo; +import java.beans.Introspector; +import java.beans.MethodDescriptor; +import java.io.File; +import java.net.URL; +import java.net.URLClassLoader; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.nio.file.StandardCopyOption; +import java.util.Arrays; + +/** + * @test + * @bug 8159696 + * @library /javax/swing/regtesthelpers + * @compile ./stub/Stub.java + * @run main/othervm -mx32M UnloadClassBeanInfo + */ +public class UnloadClassBeanInfo { + + private static URLClassLoader loader; + + public static void main(final String[] args) throws Exception { + Class cl = getStub(); + System.out.println("cl.getClassLoader() = " + cl.getClassLoader()); + final BeanInfo beanInfo = Introspector.getBeanInfo(cl, Object.class); + MethodDescriptor[] mds = beanInfo.getMethodDescriptors(); + System.out.println("mds = " + Arrays.toString(mds)); + loader.close(); + loader=null; + cl=null; + Util.generateOOME(); + mds = beanInfo.getMethodDescriptors(); + System.out.println("mds = " + Arrays.toString(mds)); + } + + /** + * The Stub class is compiled by jtreg, but we want to move it so it is not + * on the application classpath. We want to load it through a separate + * classloader. + */ + static Class getStub() throws Exception { + final String testclasses = System.getProperty("test.classes"); + final File subdir = new File(testclasses, "stub"); + subdir.mkdir(); + + final Path src = Paths.get(testclasses, "Stub.class"); + final Path dest = subdir.toPath().resolve("Stub.class"); + Files.move(src, dest, StandardCopyOption.REPLACE_EXISTING); + + loader = new URLClassLoader(new URL[]{subdir.toURL()}); + return Class.forName("Stub", true, loader); + } +}