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Article #15901

Re: Let sleeping threads lie?

#15901
From: Tom Heagy
Date: Tue, 27 Apr 1999 00:00
38 lines
2002 bytes
SORRY- This is a duplicate of a previous message.  I didn't think the first
one made it through.

Tom Heagy wrote:

> I'm trying to find a way to wake up a sleeping thread and I'm missing
> something that is probably obvious to someone else.
>
> I have a little test project where I've created an object (Sleeper) that
> extends "Thread" and does nothing more than the following in it's run
> method:
>
>     while (true)  {
>       System.out.println("I'm going to sleep for 10 seconds.");
>       try {
>         Thread.sleep(10000);
>       }
>       catch (InterruptedException e)  {
>         System.out.println("My sleep was interrupted.");
>       }
>       System.out.println("I'm awake!!");
>     }
>
> Nothing special here and this obviously works as desired.  It wakes up
> every 10 seconds and prints it's messages.  Now, my problem comes into
> play when I want to wake up the thread BEFORE it does itself.  I thought
> this was possible through the "notify" method.  I have another class
> (with a Main method) that instantiates a Sleeper object and executes the
> "notify" method when a user clicks a button.  When I do this however, I
> get the message that states "Current thread not owner".
>
> I guess my bottom line is- "How do I become the owner of this thread?"
> I own the original handle to the sleeper object.  What else do I need to
> do?
>
> Thanks in advance for your input.
>
> -Tom
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From: Tom Heagy <tom.heagy@sciatl.com>
Subject: Re: Let sleeping threads lie?
Date: 1999/04/27
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