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      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 import com.google.common.annotations.Beta;
     21 
     22 /**
     23  * {@link Error} variant of {@link java.util.concurrent.ExecutionException}. As
     24  * with {@code ExecutionException}, the error's {@linkplain #getCause() cause}
     25  * comes from a failed task, possibly run in another thread. That cause should
     26  * itself be an {@code Error}; if not, use {@code ExecutionException} or {@link
     27  * UncheckedExecutionException}. This allows the client code to continue to
     28  * distinguish between exceptions and errors, even when they come from other
     29  * threads.
     30  *
     31  * @author Chris Povirk
     32  * @since 10.0
     33  */
     34 @Beta
     35 @GwtCompatible
     36 public class ExecutionError extends Error {
     37   /**
     38    * Creates a new instance with {@code null} as its detail message.
     39    */
     40   protected ExecutionError() {}
     41 
     42   /**
     43    * Creates a new instance with the given detail message.
     44    */
     45   protected ExecutionError(String message) {
     46     super(message);
     47   }
     48 
     49   /**
     50    * Creates a new instance with the given detail message and cause.
     51    */
     52   public ExecutionError(String message, Error cause) {
     53     super(message, cause);
     54   }
     55 
     56   /**
     57    * Creates a new instance with the given cause.
     58    */
     59   public ExecutionError(Error cause) {
     60     super(cause);
     61   }
     62 
     63   private static final long serialVersionUID = 0;
     64 }
     65