Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Robert Klemme <shortcutter@googlemail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Threads, waiting for last one to finish
Date: Sun, 13 Jan 2013 19:38:44 +0100
Lines: 33
Message-ID: <algd9nFetseU1@mid.individual.net>
References: <oe21f8d1h1d357bljli7009crmaf3kmag9@4ax.com> <kcqroc$l06$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: individual.net WFoPOnqsWI+ZtyZHfljV/gSZjq22A/xG9yEgpe3nke9Lg+QdQuBfd8iktcxjBNnHM=
Cancel-Lock: sha1:VZAVvzHZMmEOmQhyaI9sBSlvhV4=
User-Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:17.0) Gecko/20130107 Thunderbird/17.0.2
In-Reply-To: <kcqroc$l06$1@dont-email.me>
Xref: csiph.com comp.lang.java.programmer:21381

On 12.01.2013 06:19, Knute Johnson wrote:
> On 1/11/2013 1:56 PM, Roedy Green wrote:
>> I have 25 threads that start at once. I need to wait until the last
>> one completes. Is there a better way to handle that than using a
>> ThreadPoolExecutor which seems overkill.
>>
>
> You can always join() them.

I am surprised that this got just one mention so far.  In absence of 
Executor (which has some issues, as has been mentioned) this is the most 
straightforward way to do it.

// untested and from memory
final Thread[] threads = new Thread[15];

for ( int i = 0; i < threads.length; ++i ) {
   final Thread th = new Thread(...);
   th.start();
   threads[i] = th;
}

for ( final Thread th : threads ) {
   th.join();
}

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/