content: /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * 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,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  /*
   * 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.
   *
   * <p>
   * The simplest implementation of this interface is just:
   * <pre> {@code
   * 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);
  }
  