a quick question about String

[Enrico Olivelli]

Alan,
are you talking about the fact that you cannot "wrap" an existing
byte[] that you know that you are already encoded ?

In that case the main problem is that the String is supposed to be
immutable and when you pass the byte[] it must be copied in order to
prevent someone else to modify the contents of the array behind the String


Enrico

Il giorno gio 23 dic 2021 alle ore 23:56 Simon Roberts
<simon at dancingcloudservices.com> ha scritto:
>
> I think there are two things at stake here, one is that as I understand it,
> "new means new", in every case. This is at least partly why the
> constructors on soon-to-be value objects are deprecated; they become
> meaningless. The other is that if the presumption is that we should
> always intern new Strings, I must disagree. Pooling takes time and memory
> to manage, and if there are very few duplicates, it's a waste of both. I
> believe it should be up to the programmer to decide if this is appropriate
> in their situation. Of course, the GC system seems to be capable of
> stepping in in some incarnations, which adds something of a counterexample,
> but that is, if I recall, configurable.
>
>
> On Thu, Dec 23, 2021 at 2:53 PM Xeno Amess <xenoamess at gmail.com> wrote:
>
> > never should，as Object can be use as lock.
> >
> > XenoAmess
> > ________________________________
> > From: core-libs-dev <core-libs-dev-retn at openjdk.java.net> on behalf of
> > Bernd Eckenfels <ecki at zusammenkunft.net>
> > Sent: Friday, December 24, 2021 5:51:55 AM
> > To: alan Snyder <fishgarage at cbfiddle.com>; core-libs-dev <
> > core-libs-dev at openjdk.java.net>
> > Subject: Re: a quick question about String
> >
> > new String() always creates a new instance.
> >
> > Gruss
> > Bernd
> > --
> > http://bernd.eckenfels.net
> > ________________________________
> > Von: core-libs-dev <core-libs-dev-retn at openjdk.java.net> im Auftrag von
> > Alan Snyder <javalists at cbfiddle.com>
> > Gesendet: Thursday, December 23, 2021 6:59:18 PM
> > An: core-libs-dev <core-libs-dev at openjdk.java.net>
> > Betreff: a quick question about String
> >
> > Do the public constructors of String actually do what their documentation
> > says (allocate a new instance), or is there some kind of compiler magic
> > that might avoid allocation?
> >
> >
>
> --
> Simon Roberts
> (303) 249 3613