src/java.base/share/classes/java/util/concurrent/CancellationException.java

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 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

package java.util.concurrent;

/**
 * Exception indicating that the result of a value-producing task,
 * such as a {@link FutureTask}, cannot be retrieved because the task
 * was cancelled.
 *
 * @since 1.5
 * @author Doug Lea
 */
public class CancellationException extends IllegalStateException {
    private static final long serialVersionUID = -9202173006928992231L;

    /**
     * Constructs a {@code CancellationException} with no detail message.
     */
    public CancellationException() {}

    /**
     * Constructs a {@code CancellationException} with the specified detail
     * message.
     *
     * @param message the detail message
     */
    public CancellationException(String message) {
        super(message);
    }

    /**
     * Only intended for in-package usage.
     * Constructs a {@code CancellationException} with the specified detail
     * message and CancellationException cause.
     *
     * @param message the detail message
     * @param cause the underlying cancellation exception
     */
    CancellationException(String message, CancellationException cause) {
        super(message, cause);
    }
}