/* * Copyright (c) 2008, 2019, 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 6397609 * @summary Tests autocleaning * @author Sergey Malenkov * @modules java.compiler * java.desktop * jdk.compiler */ import java.beans.PropertyEditorManager; import java.lang.ref.WeakReference; public class Test6397609 { public static void main(String[] args) throws Exception { Class targetClass = Object.class; Class editorClass = new MemoryClassLoader().compile("Editor", "public class Editor extends java.beans.PropertyEditorSupport {}"); PropertyEditorManager.registerEditor(targetClass, editorClass); // trigger a gc Object object = new Object(); var r = new WeakReference(object); object = null; while (r.get() != null) { System.gc(); Thread.sleep(100); } if (PropertyEditorManager.findEditor(targetClass) == null) { throw new Error("the editor is lost"); } // allow, and wait for, Editor class to be unloaded var ref = new WeakReference>(editorClass); editorClass = null; while (ref.get() != null) { System.gc(); Thread.sleep(100); } if (PropertyEditorManager.findEditor(targetClass) != null) { throw new Error("unexpected editor is found"); } } }