<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--NewPage--> <HTML> <HEAD> <!-- Generated by javadoc (build 1.4.2-rc) on Fri Jun 13 00:14:17 PDT 2003 --> <TITLE> Runnable (Java 2 Platform SE v1.4.2) </TITLE> <META NAME="keywords" CONTENT="java.lang.Runnable interface"> <META NAME="keywords" CONTENT="run()"> <LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"> <SCRIPT type="text/javascript"> function windowTitle() { parent.document.title="Runnable (Java 2 Platform SE v1.4.2)"; } </SCRIPT> </HEAD> <BODY BGCOLOR="white" onload="windowTitle();"> <!-- ========= START OF TOP NAVBAR ======= --> <A NAME="navbar_top"><!-- --></A> <A HREF="#skip-navbar_top" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_top_firstrow"><!-- --></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Runnable.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> <b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.4.2</b></EM> </TD> </TR>
<TR> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../java/lang/Comparable.html" title="interface in java.lang"><B>PREV CLASS</B></A> NEXT CLASS</FONT></TD> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="Runnable.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--> </SCRIPT> <NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A> </NOSCRIPT> </FONT></TD> </TR> <TR> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> </TR> </TABLE> <A NAME="skip-navbar_top"></A> <!-- ========= END OF TOP NAVBAR ========= --> <HR> <!-- ======== START OF CLASS DATA ======== --> <H2> <FONT SIZE="-1"> java.lang</FONT> <BR> Interface Runnable</H2> <DL> <DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../javax/swing/text/AsyncBoxView.ChildState.html" title="class in javax.swing.text">AsyncBoxView.ChildState</A>, <A HREF="../../java/awt/image/renderable/RenderableImageProducer.html" title="class in java.awt.image.renderable">RenderableImageProducer</A>, <A HREF="../../java/lang/Thread.html" title="class in java.lang">Thread</A>, <A HREF="../../java/util/TimerTask.html" title="class in java.util">TimerTask</A></DD> </DL> <HR> <DL> <DT>public interface <B>Runnable</B></DL> <P> The <code>Runnable</code> interface should be implemented by any class whose instances are intended to be executed by a thread. The class must define a method of no arguments called <code>run</code>. 任何打算实例由线程执行的类都应当实现Runnable接口,定义一个不含参数的run方法。 <p> This interface is designed to provide a common protocol for objects that wish to execute code while they are active. For example, <code>Runnable</code> is implemented by class <code>Thread</code>. Being active simply means that a thread has been started and has not yet been stopped. 该接口被设计用来提供一种对象被激活时执行代码的通用方式。例如实现Runnable的类Thread, 激活的概念可以简单定义为线程开始但还未结束。 <p> In addition, <code>Runnable</code> provides the means for a class to be active while not subclassing <code>Thread</code>. A class that implements <code>Runnable</code> can run without subclassing <code>Thread</code> by instantiating a <code>Thread</code> instance and passing itself in as the target. In most cases, the <code>Runnable</code> interface should be used if you are only planning to override the <code>run()</code> method and no other <code>Thread</code> methods. This is important because classes should not be subclassed unless the programmer intends on modifying or enhancing the fundamental behavior of the class. 另外,Runnable为非Thread子类的类提供了一种激活的方式。实现Runnable的类可以不继承Thread而实例化为Thread实例,将自身作为 运行目标。在大多数情况下,如果仅计划覆盖run()方法,而不需要其他的Thread方法时应当使用Runnable接口。重要的是 这些类没有继承除非程序员打算修改或者改进该类的基本行为。 <P> <P> <DL> <DT><B>Since:</B></DT> <DD>JDK1.0</DD> <DT><B>See Also:</B><DD><A HREF="../../java/lang/Thread.html" title="class in java.lang"><CODE>Thread</CODE></A></DL> <HR> <P> <!-- ======== NESTED CLASS SUMMARY ======== --> <!-- =========== FIELD SUMMARY =========== -->
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<A NAME="method_summary"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TD COLSPAN=2><FONT SIZE="+2"> <B>Method Summary</B></FONT></TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> void</CODE></FONT></TD> <TD><CODE><B><A HREF="../../java/lang/Runnable.html#run()">run</A></B>()</CODE> <BR> When an object implementing interface <code>Runnable</code> is used to create a thread, starting the thread causes the object's <code>run</code> method to be called in that separately executing thread.实现Runnable接口的对象被用来创建一个线程,单独执行的线程调用该对象的run方法来启动线程。</TD> </TR> </TABLE> <P> <!-- ============ FIELD DETAIL =========== --> <!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="method_detail"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TD COLSPAN=1><FONT SIZE="+2"> <B>Method Detail</B></FONT></TD> </TR> </TABLE> <A NAME="run()"><!-- --></A><H3> run</H3> <PRE> public void <B>run</B>()</PRE> <DL> <DD>When an object implementing interface <code>Runnable</code> is used to create a thread, starting the thread causes the object's <code>run</code> method to be called in that separately executing thread. 实现Runnable接口的对象被用来创建一个线程,单独执行的线程调用该对象的run方法来启动线程。 <p> The general contract of the method <code>run</code> is that it may take any action whatsoever. 通常约定run方法可以执行任何动作。 <P> <DD><DL> <DT><B>See Also:</B><DD><A HREF="../../java/lang/Thread.html#run()"><CODE>Thread.run()</CODE></A></DL> </DD> </DL> <!-- ========= END OF CLASS DATA ========= --> <HR> <!-- ======= START OF BOTTOM NAVBAR ====== --> <A NAME="navbar_bottom"><!-- --></A> <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_bottom_firstrow"><!-- --></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Runnable.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> <b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.4.2</b></EM> </TD> </TR>
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