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1   /*
2    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3    *
4    * This code is free software; you can redistribute it and/or modify it
5    * under the terms of the GNU General Public License version 2 only, as
6    * published by the Free Software Foundation.  Oracle designates this
7    * particular file as subject to the "Classpath" exception as provided
8    * by Oracle in the LICENSE file that accompanied this code.
9    *
10   * This code is distributed in the hope that it will be useful, but WITHOUT
11   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13   * version 2 for more details (a copy is included in the LICENSE file that
14   * accompanied this code).
15   *
16   * You should have received a copy of the GNU General Public License version
17   * 2 along with this work; if not, write to the Free Software Foundation,
18   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19   *
20   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21   * or visit www.oracle.com if you need additional information or have any
22   * questions.
23   */
24  
25  /*
26   * This file is available under and governed by the GNU General Public
27   * License version 2 only, as published by the Free Software Foundation.
28   * However, the following notice accompanied the original version of this
29   * file:
30   *
31   * Written by Doug Lea with assistance from members of JCP JSR-166
32   * Expert Group and released to the public domain, as explained at
33   * http://creativecommons.org/publicdomain/zero/1.0/
34   */
35  
36  package java.util.concurrent;
37  
38  /**
39   * Exception indicating that the result of a value-producing task,
40   * such as a {@link FutureTask}, cannot be retrieved because the task
41   * was cancelled.
42   *
43   * @since 1.5
44   * @author Doug Lea
45   */
46  public class CancellationException extends IllegalStateException {
47      private static final long serialVersionUID = -9202173006928992231L;
48  
49      /**
50       * Constructs a {@code CancellationException} with no detail message.
51       */
52      public CancellationException() {}
53  
54      /**
55       * Constructs a {@code CancellationException} with the specified detail
56       * message.
57       *
58       * @param message the detail message
59       */
60      public CancellationException(String message) {
61          super(message);
62      }
63  }