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From: Knute Johnson <nospam@knutejohnson.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: java Thread class
Date: Sun, 09 Oct 2011 20:20:53 -0700
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On 10/9/2011 8:07 PM, 光 署 wrote:
> hi all, I have a Thread named r1 , why I can not write "
> r1.start();r1.start();". when I write "r1.start(); r1.start();" there
> was an error that "IllegalThreadStateException".
>
> r1.run(){
>      public void run(){
>          System.out.println("name" + super.getName() + "---->" +
> super.getI());
>      }
> }

start

public void start()

     Causes this thread to begin execution; the Java Virtual Machine 
calls the run method of this thread.

     The result is that two threads are running concurrently: the 
current thread (which returns from the call to the start method) and the 
other thread (which executes its run method).

     It is never legal to start a thread more than once. In particular, 
a thread may not be restarted once it has completed execution.

     Throws:
         IllegalThreadStateException - if the thread was already started.
     See Also:
         run(), stop()



-- 

Knute Johnson