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/*
* 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/licenses/publicdomain
*/
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.
*
* <p>
* The simplest implementation of this interface is just:
* <pre>
* class SimpleThreadFactory implements ThreadFactory {
* public Thread newThread(Runnable r) {
* return new Thread(r);
* }
* }
* </pre>
*
* 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);
}
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