1 /*
   2  * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /* @test
  25    @bug 4116016
  26    @summary Ensure that finalizers are not invoked more than once when on-exit
  27             finalization is enabled and a finalizer invokes System.exit after
  28             System.exit has already been invoked
  29    @build FinExit
  30    @run shell FinExit.sh
  31  */
  32 
  33 
  34 public class FinExit {
  35 
  36     boolean finalized = false;
  37 
  38     public void finalize() {
  39         if (finalized) {
  40             System.out.println("2");
  41         } else {
  42             finalized = true;
  43             System.out.println("1");
  44             System.exit(0);
  45         }
  46     }
  47 
  48     public static void main(String[] args) throws Exception {
  49         System.runFinalizersOnExit(true);
  50         Object o = new FinExit();
  51         System.exit(0);
  52     }
  53 
  54 }