    001    /*
    002     * Copyright (C) 2011 The Guava Authors
    003     *
    004     * Licensed under the Apache License, Version 2.0 (the "License");
    005     * you may not use this file except in compliance with the License.
    006     * You may obtain a copy of the License at
    007     *
    008     * http://www.apache.org/licenses/LICENSE-2.0
    009     *
    010     * Unless required by applicable law or agreed to in writing, software
    011     * distributed under the License is distributed on an "AS IS" BASIS,
    012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    013     * See the License for the specific language governing permissions and
    014     * limitations under the License.
    015     */
    016
    017    package com.google.common.util.concurrent;
    018
    019    import com.google.common.annotations.Beta;
    020    import com.google.common.annotations.GwtCompatible;
    021
    022    /**
    023     * {@link Error} variant of {@link java.util.concurrent.ExecutionException}. As
    024     * with {@code ExecutionException}, the error's {@linkplain #getCause() cause}
    025     * comes from a failed task, possibly run in another thread. That cause should
    026     * itself be an {@code Error}; if not, use {@code ExecutionException} or {@link
    027     * UncheckedExecutionException}. This allows the client code to continue to
    028     * distinguish between exceptions and errors, even when they come from other
    029     * threads.
    030     *
    031     * @author Chris Povirk
    032     * @since 10.0
    033     */
    034    @Beta
    035    @GwtCompatible
    036    public class ExecutionError extends Error {
    037      /**
    038       * Creates a new instance with {@code null} as its detail message.
    039       */
    040      protected ExecutionError() {}
    041
    042      /**
    043       * Creates a new instance with the given detail message.
    044       */
    045      protected ExecutionError(String message) {
    046        super(message);
    047      }
    048
    049      /**
    050       * Creates a new instance with the given detail message and cause.
    051       */
    052      public ExecutionError(String message, Error cause) {
    053        super(message, cause);
    054      }
    055
    056      /**
    057       * Creates a new instance with the given cause.
    058       */
    059      public ExecutionError(Error cause) {
    060        super(cause);
    061      }
    062
    063      private static final long serialVersionUID = 0;
    064    }