001/*
002 * Copyright (C) 2011 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
005 * in compliance with the License. You may obtain a copy of the License at
006 *
007 * http://www.apache.org/licenses/LICENSE-2.0
008 *
009 * Unless required by applicable law or agreed to in writing, software distributed under the License
010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
011 * or implied. See the License for the specific language governing permissions and limitations under
012 * the License.
013 */
014
015package com.google.common.util.concurrent;
016
017import com.google.common.annotations.GwtCompatible;
018import org.checkerframework.checker.nullness.qual.Nullable;
019
020/**
021 * {@link Error} variant of {@link java.util.concurrent.ExecutionException}. As with {@code
022 * ExecutionException}, the error's {@linkplain #getCause() cause} comes from a failed task,
023 * possibly run in another thread. That cause should itself be an {@code Error}; if not, use {@code
024 * ExecutionException} or {@link UncheckedExecutionException}. This allows the client code to
025 * continue to distinguish between exceptions and errors, even when they come from other threads.
026 *
027 * @author Chris Povirk
028 * @since 10.0
029 */
030@GwtCompatible
031public class ExecutionError extends Error {
032  /** Creates a new instance with {@code null} as its detail message. */
033  protected ExecutionError() {}
034
035  /** Creates a new instance with the given detail message. */
036  protected ExecutionError(@Nullable String message) {
037    super(message);
038  }
039
040  /** Creates a new instance with the given detail message and cause. */
041  public ExecutionError(@Nullable String message, @Nullable Error cause) {
042    super(message, cause);
043  }
044
045  /** Creates a new instance with the given cause. */
046  public ExecutionError(@Nullable Error cause) {
047    super(cause);
048  }
049
050  private static final long serialVersionUID = 0;
051}