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From "Robert Lougher" <rob.loug...@gmail.com>
Subject Re: Re: [drlvm] string interning in java
Date Sat, 29 Jul 2006 00:40:09 GMT
Hi,

On 7/29/06, Alex Blewitt <alex.blewitt@gmail.com> wrote:
> On 28/07/06, Salikh Zakirov <Salikh.Zakirov@intel.com> wrote:
> > Alex Blewitt wrote:
>
> Importantly, it explains why the Eclipse NLS class uses static string
> variables to refer to messages, and not to String literals for exactly
> this reason. If you use a static string variable that is dynamically
> initialised from a properties file, you only take the memory up when
> you need to refer to that message (e.g. in the constructor of an
> exception in an exceptional condition). Furthermore, because it's a
> dynamically read in string, it doesn't pollute the intern() pool, and
> thus when the class is unloaded, the string is unloaded too. Once a
> String is intern()'d, it's like a memory leak -- you'll never see that
> memory again.

The interned String table should be garbage-collected.  If the only
reference to an interned String is from the class constant pool it
will be collected when the class is unloaded.  If the intern table is
preventing Strings from being collected it's a bug in the VM!

Rob.

>
> Alex.
>
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