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Re: baseline performance test using java ...

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From	Abu Yahya <abu_yahya@invalid.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: baseline performance test using java ...
Date	Mon, 04 Jul 2011 06:52:04 +0530
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On 7/4/2011 12:15 AM, Patricia Shanahan wrote:
> On 7/3/2011 11:33 AM, Abu Yahya wrote:
>> On 7/3/2011 11:23 PM, lbrt chx _ gemale kom wrote:
>>
>>>>> ~ We have all learned we should avoid String(s) and use
>>>>> StringBuffer(s) or better yet StringBuilder(s) but there is
>>> ~
>>>> Er, no. Strings are great ...
>>> ~
>>> I (obviously) meant to say String(s) if you need to build them
>>> andStringBuilder(s)
>> > if you are working (most of us by now) on some multiprocessing core
>>> ~
>>
>> If you need to build them, you'd need a StringBuilder. And if you need
>> support for multiple threads AND need to modify them, you'd need a
>> StringBuffer.
>
> Often, the StringBuffer locking is not strong enough to be really
> useful. If, for example, a thread needs to append two strings to the
> buffer and have them appear consecutively in the resulting string, it
> needs synchronization at a higher level.

True. StringBuffer's locking will only help in guaranteeing an output in 
which either the first string /or/ the second string is /completely/ 
appended first. If the order matters, the built-in locking won't help.

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Thread

baseline performance test using java ... lbrt chx _ gemale kom - 2011-07-03 17:53 +0000
  Re: baseline performance test using java ... Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-07-03 14:08 -0400
  Re: baseline performance test using java ... Abu Yahya <abu_yahya@invalid.com> - 2011-07-04 00:03 +0530
    Re: baseline performance test using java ... Patricia Shanahan <pats@acm.org> - 2011-07-03 11:45 -0700
      Re: baseline performance test using java ... Abu Yahya <abu_yahya@invalid.com> - 2011-07-04 06:52 +0530
        Re: baseline performance test using java ... lewbloch <lewbloch@gmail.com> - 2011-07-04 03:53 -0700
    Re: baseline performance test using java ... lewbloch <lewbloch@gmail.com> - 2011-07-04 03:44 -0700
  Re: baseline performance test using java ... Patricia Shanahan <pats@acm.org> - 2011-07-03 12:09 -0700
  Re: baseline performance test using java ... Patricia Shanahan <pats@acm.org> - 2011-07-04 09:54 -0700

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