0N/A/*
2362N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
0N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2362N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/A/*
0N/A * This file is available under and governed by the GNU General Public
0N/A * License version 2 only, as published by the Free Software Foundation.
0N/A * However, the following notice accompanied the original version of this
0N/A * file:
0N/A *
0N/A * Written by Doug Lea with assistance from members of JCP JSR-166
0N/A * Expert Group and released to the public domain, as explained at
0N/A * http://creativecommons.org/publicdomain/zero/1.0/
0N/A */
0N/A
0N/Apackage java.util.concurrent;
0N/A
0N/A/**
0N/A * A task that returns a result and may throw an exception.
0N/A * Implementors define a single method with no arguments called
0N/A * <tt>call</tt>.
0N/A *
0N/A * <p>The <tt>Callable</tt> interface is similar to {@link
0N/A * java.lang.Runnable}, in that both are designed for classes whose
0N/A * instances are potentially executed by another thread. A
0N/A * <tt>Runnable</tt>, however, does not return a result and cannot
0N/A * throw a checked exception.
0N/A *
0N/A * <p> The {@link Executors} class contains utility methods to
0N/A * convert from other common forms to <tt>Callable</tt> classes.
0N/A *
0N/A * @see Executor
0N/A * @since 1.5
0N/A * @author Doug Lea
0N/A * @param <V> the result type of method <tt>call</tt>
*/
public interface Callable<V> {
/**
* Computes a result, or throws an exception if unable to do so.
*
* @return computed result
* @throws Exception if unable to compute a result
*/
V call() throws Exception;
}