Re: Java 7 vs 8 speed issues on Win7?

From:

Robert Klemme <shortcutter@googlemail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 20 Nov 2014 19:06:17 +0100

Message-ID:

<cd6osrFsmbiU1@mid.individual.net>

On 20.11.2014 13:24, Silvio wrote:

I am in the habit of writing lexers and parsers and I still curse the
day they decided to do this.

If you want sharing semantics you can still do that by explicitly
implementing this. I know, you have to do it which costs.

It was just a cheap way to save memory on
the String class because it allowed them to ditch the offset/length
members.

It's not only that. I am pretty sure this also has to do with how
garbage collectors evolved. Nowadays it is usually much cheaper to just
create a bunch of short lived objects than trying to devise
sophisticated schemes to save memory by reusing objects (which then will
stay around for longer). And we all know that the longer an object
lives the higher the GC cost on it because it has to be revisited over
and over again. I am pretty confident that engineers at Sun / Oracle
did sufficient research to warrant the change. As with every change
some suffer. But I assume for the majority it is an improvement or at
least not noticeable.

Kind regards

robert