1   /*
2    * Copyright (C) 2011 The Guava Authors
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package com.google.common.util.concurrent;
18  
19  import com.google.common.annotations.GwtCompatible;
20  
21  import javax.annotation.Nullable;
22  
23  /**
24   * Unchecked variant of {@link java.util.concurrent.ExecutionException}. As with
25   * {@code ExecutionException}, the exception's {@linkplain #getCause() cause}
26   * comes from a failed task, possibly run in another thread.
27   *
28   * <p>{@code UncheckedExecutionException} is intended as an alternative to
29   * {@code ExecutionException} when the exception thrown by a task is an
30   * unchecked exception. However, it may also wrap a checked exception in some
31   * cases.
32   *
33   * <p>When wrapping an {@code Error} from another thread, prefer {@link
34   * ExecutionError}. When wrapping a checked exception, prefer {@code
35   * ExecutionException}.
36   *
37   * @author Charles Fry
38   * @since 10.0
39   */
40  @GwtCompatible
41  public class UncheckedExecutionException extends RuntimeException {
42    /**
43     * Creates a new instance with {@code null} as its detail message.
44     */
45    protected UncheckedExecutionException() {}
46  
47    /**
48     * Creates a new instance with the given detail message.
49     */
50    protected UncheckedExecutionException(@Nullable String message) {
51      super(message);
52    }
53  
54    /**
55     * Creates a new instance with the given detail message and cause.
56     */
57    public UncheckedExecutionException(@Nullable String message, @Nullable Throwable cause) {
58      super(message, cause);
59    }
60  
61    /**
62     * Creates a new instance with the given cause.
63     */
64    public UncheckedExecutionException(@Nullable Throwable cause) {
65      super(cause);
66    }
67  
68    private static final long serialVersionUID = 0;
69  }