70 lines
2.9 KiB
Java
70 lines
2.9 KiB
Java
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/*
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* Copyright 1994-2005 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package java.lang;
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/**
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* The <code>Runnable</code> interface should be implemented by any
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* class whose instances are intended to be executed by a thread. The
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* class must define a method of no arguments called <code>run</code>.
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* <p>
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* This interface is designed to provide a common protocol for objects that
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* wish to execute code while they are active. For example,
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* <code>Runnable</code> is implemented by class <code>Thread</code>.
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* Being active simply means that a thread has been started and has not
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* yet been stopped.
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* <p>
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* In addition, <code>Runnable</code> provides the means for a class to be
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* active while not subclassing <code>Thread</code>. A class that implements
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* <code>Runnable</code> can run without subclassing <code>Thread</code>
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* by instantiating a <code>Thread</code> instance and passing itself in
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* as the target. In most cases, the <code>Runnable</code> interface should
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* be used if you are only planning to override the <code>run()</code>
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* method and no other <code>Thread</code> methods.
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* This is important because classes should not be subclassed
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* unless the programmer intends on modifying or enhancing the fundamental
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* behavior of the class.
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*
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* @author Arthur van Hoff
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* @see java.lang.Thread
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* @see java.util.concurrent.Callable
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* @since JDK1.0
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*/
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public
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interface Runnable {
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/**
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* When an object implementing interface <code>Runnable</code> is used
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* to create a thread, starting the thread causes the object's
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* <code>run</code> method to be called in that separately executing
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* thread.
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* <p>
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* The general contract of the method <code>run</code> is that it may
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* take any action whatsoever.
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*
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* @see java.lang.Thread#run()
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*/
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public abstract void run();
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}
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