Java tutorial
/* * 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; }