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From: Fred Greer <fggreer@nospam.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: ImageIO/BufferedImage behaving inconsistently from one day to the next.
Date: Wed, 20 Jun 2012 04:08:03 +0000 (UTC)
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On Tue, 19 Jun 2012 20:38:40 -0700, Patricia Shanahan wrote:

> On 6/19/2012 7:31 PM, Fred Greer wrote: ...
>> Neither of these makes much sense, because standard library code is not
>> supposed to magically change its behavior like that, and it's certainly
>> not supposed to make something that used to work no longer work by
>> magically changing its behavior overnight.
> 
> Is your code multi-threaded?
> 
> I'm asking because things that transition "magically" between working
> and not working are often timing dependent, and transition because of a
> change that affects relative speeds, such as file placement and cache
> history.
> 
> Patricia

It's single-threaded.