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Ravi - 06 Mar 2007 17:32 GMT

Can you please tell why the following code snippet gives me error
IllegalThreadStateException

n1 = new Thread(......//
n2 = new Thread(......//
..
//
n1.start();
n2.start();

n1.join();
n2.join();

n1.start();
n2.start();

...

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Eric Sosman - 06 Mar 2007 17:54 GMT

Ravi wrote On 03/06/07 12:32,:

> Can you please tell why the following code snippet gives me error
> IllegalThreadStateException
[quoted text clipped - 11 lines]
> n1.start();
> n2.start();

Because a Thread can only be started once. Read the
Javadoc.

Signature

Eric.Sosman@sun.com

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Ravi - 07 Mar 2007 07:09 GMT

> Because a Thread can only be started once. Read the
> Javadoc.
>
> --
> Eric.Sos...@sun.com

but can we stop and then start it again.any work around for it

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Thomas Schodt - 07 Mar 2007 07:23 GMT

>> Because a Thread can only be started once. Read the
>> Javadoc.
[quoted text clipped - 3 lines]
>
> but can we stop and then start it again.any work around for it

Tell us what you are trying to accomplish.

Is there a reason for not using new Thread() again?

[A workaround would be; don't allow the thread to complete in the first
place.]

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Patricia Shanahan - 07 Mar 2007 09:47 GMT

>> Because a Thread can only be started once. Read the
>> Javadoc.
[quoted text clipped - 3 lines]
>
> but can we stop and then start it again.any work around for it

You have two options:

1. Use some form of coordination other than join, so that each thread
does not terminate until it has done all its work.

2. Create new threads to do the post-join tasks.

Patricia

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