79 lines
2.8 KiB
Java
79 lines
2.8 KiB
Java
/*
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* Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.beans.BeanInfo;
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import java.beans.Introspector;
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import java.beans.MethodDescriptor;
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import java.io.File;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.file.StandardCopyOption;
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import java.util.Arrays;
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/**
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* @test
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* @bug 8159696
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* @library /javax/swing/regtesthelpers
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* @compile ./stub/Stub.java
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* @run main/othervm -Xmx32M UnloadClassBeanInfo
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*/
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public class UnloadClassBeanInfo {
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private static URLClassLoader loader;
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public static void main(final String[] args) throws Exception {
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Class cl = getStub();
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System.out.println("cl.getClassLoader() = " + cl.getClassLoader());
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final BeanInfo beanInfo = Introspector.getBeanInfo(cl, Object.class);
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MethodDescriptor[] mds = beanInfo.getMethodDescriptors();
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System.out.println("mds = " + Arrays.toString(mds));
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loader.close();
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loader=null;
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cl=null;
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Util.generateOOME();
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mds = beanInfo.getMethodDescriptors();
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System.out.println("mds = " + Arrays.toString(mds));
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}
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/**
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* The Stub class is compiled by jtreg, but we want to move it so it is not
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* on the application classpath. We want to load it through a separate
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* classloader.
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*/
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static Class<?> getStub() throws Exception {
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final String testclasses = System.getProperty("test.classes");
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final File subdir = new File(testclasses, "stub");
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subdir.mkdir();
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final Path src = Paths.get(testclasses, "Stub.class");
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final Path dest = subdir.toPath().resolve("Stub.class");
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Files.move(src, dest, StandardCopyOption.REPLACE_EXISTING);
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loader = new URLClassLoader(new URL[]{subdir.toURL()});
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return Class.forName("Stub", true, loader);
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}
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}
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