/* * Copyright (c) 2022, 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. * */ /** * Simple application that checks that shutdown does not commence until * after the last non-daemon thread has terminated. Reporting failure is * tricky because we can't uses exceptions (as they are ignored from Shutdown * hooks) and we can't call System.exit. So we rely on System.out being checked * in the TestDaemonDestroy application. */ public class Main { static volatile Thread t1; public static void main() { t1 = new Thread(() -> { System.out.println("T1 started"); try { Thread.sleep(5000); } catch (InterruptedException ignore) { } System.out.println("T1 finished"); }, "T1"); t1.setDaemon(false); Thread hook = new Thread(() -> { System.out.println("HOOK started"); if (t1.isAlive()) { System.out.println("Error: T1 isAlive"); } }, "HOOK"); Runtime.getRuntime().addShutdownHook(hook); t1.start(); } }