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/*
 * Copyright (C) 2011 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.util.concurrent;

import com.google.common.annotations.GwtCompatible;

import javax.annotation.Nullable;

/**
 * {@link Error} variant of {@link java.util.concurrent.ExecutionException}. As
 * with {@code ExecutionException}, the error's {@linkplain #getCause() cause}
 * comes from a failed task, possibly run in another thread. That cause should
 * itself be an {@code Error}; if not, use {@code ExecutionException} or {@link
 * UncheckedExecutionException}. This allows the client code to continue to
 * distinguish between exceptions and errors, even when they come from other
 * threads.
 *
 * @author Chris Povirk
 * @since 10.0
 */
@GwtCompatible
public class ExecutionError extends Error {
  /**
   * Creates a new instance with {@code null} as its detail message.
   */
  protected ExecutionError() {}

  /**
   * Creates a new instance with the given detail message.
   */
  protected ExecutionError(@Nullable String message) {
    super(message);
  }

  /**
   * Creates a new instance with the given detail message and cause.
   */
  public ExecutionError(@Nullable String message, @Nullable Error cause) {
    super(message, cause);
  }

  /**
   * Creates a new instance with the given cause.
   */
  public ExecutionError(@Nullable Error cause) {
    super(cause);
  }

  private static final long serialVersionUID = 0;
}