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Re: Instantiation of a class

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On 12/07/2011 01:03, Fred wrote:
> Hello,
>
> I'm thinking about statements like String foo = new String("foo");
> When is the constructor specified not the name of the type of
> reference variable?

A common example is with collections:

List<String> notes = new ArrayList<String>();

Here I instanciated an ArrayList, but the rest of my code does not care 
what kind of List it is operating on. If I later choose to make it a 
LinkedList, a Collection.unmodifiableList() or an Array.asList(), I can. 
But I cannot trimToSize(), though, so, if I need to, that mean I will 
actually have to declare it an ArrayList and not a general List.

--
Mayeul

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Instantiation of a class Fred <albert.xtheunknown0@gmail.com> - 2011-07-11 16:03 -0700
  Re: Instantiation of a class lewbloch <lewbloch@gmail.com> - 2011-07-11 16:41 -0700
    Re: Instantiation of a class lewbloch <lewbloch@gmail.com> - 2011-07-11 16:54 -0700
  Re: Instantiation of a class Mayeul <mayeul.marguet@free.fr> - 2011-07-12 02:02 +0200
  Re: Instantiation of a class Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-07-11 21:57 -0400
    Re: Instantiation of a class Patricia Shanahan <pats@acm.org> - 2011-07-11 19:02 -0700
      Re: Instantiation of a class Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-07-11 22:10 -0400
    Re: Instantiation of a class Fred <albert.xtheunknown0@gmail.com> - 2011-07-11 20:29 -0700
      Re: Instantiation of a class lewbloch <lewbloch@gmail.com> - 2011-07-12 14:35 -0700
    Re: Instantiation of a class Gene Wirchenko <genew@ocis.net> - 2011-07-11 21:25 -0700
      Re: Instantiation of a class Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-07-12 07:47 -0400
        Re: Instantiation of a class lewbloch <lewbloch@gmail.com> - 2011-07-12 11:09 -0700

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