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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.GwtCompatible;
020    import com.google.common.annotations.Beta;
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    }