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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 <tt>Thread</tt>.  Implementations may also initialize
     * priority, name, daemon status, <tt>ThreadGroup</tt>, etc.
     *
     * @param r a runnable to be executed by new thread instance
     * @return constructed thread
     */
    Thread newThread(Runnable r);
}