Re: Substring changes (JDK 1.7)

From:
Robert Klemme <shortcutter@googlemail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Fri, 11 Jan 2013 07:29:16 +0100
Message-ID:
<al9pq3Fua06U1@mid.individual.net>
On 11.01.2013 06:26, Stefan Ram wrote:

Robert Klemme <shortcutter@googlemail.com> writes:

On 10.01.2013 21:22, Roedy Green wrote:

You no longer have to worry a about a tiny substring holding a meg+
sized base string around in memory.

Instead you have to worry about tons of substrings drawn from the same
input String to occupy a lot more memory and slowing down GC. Trade
offs, trade offs...


   But this is more natural, it fulfills the expection of non-expert
   programmers.


But it would be a significant change. There is so much software written
under the assumption of the old implementation. That change might
actually break existing programs (break in the sense of less performance
or new GC issues).

Then again it might be that there are just not that many programs which
make use of that knowledge. Who knows?

Expert programmers can implement a custom string class
   with the previous behaviour,


Well, shouldn't such a basic thing be part of the standard library?

or, - possibly better - a custom
   implementation of CharSequence (if only more APIs would use
   CharSequence instead of String!).


I agree. But unfortunately public classes and APIs are set in stone.

Kind regards

    robert

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