java.util.concurrent.ThreadFactory Maven / Gradle / Ivy
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* 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
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* accompanied this code).
*
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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;
/**
* An object that creates new threads on demand. Using thread factories
* removes hardwiring of calls to {@link Thread#Thread(Runnable) new Thread},
* enabling applications to use special thread subclasses, priorities, etc.
*
*
* The simplest implementation of this interface is just:
*
* class SimpleThreadFactory implements ThreadFactory {
* public Thread newThread(Runnable r) {
* return new Thread(r);
* }
* }
*
*
* The {@link Executors#defaultThreadFactory} method provides a more
* useful simple implementation, that sets the created thread context
* to known values before returning it.
* @since 1.5
* @author Doug Lea
*/
public interface ThreadFactory {
/**
* Constructs a new {@code Thread}. Implementations may also initialize
* priority, name, daemon status, {@code ThreadGroup}, etc.
*
* @param r a runnable to be executed by new thread instance
* @return constructed thread, or {@code null} if the request to
* create a thread is rejected
*/
Thread newThread(Runnable r);
}