Groups > comp.lang.java.programmer > #2754

Re: ArrayAdapter

From	Lew <noone@lewscanon.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: ArrayAdapter
Date	2011-04-02 10:48 -0400
Organization	albasani.net
Message-ID	<in7d0j$ric$1@news.albasani.net> (permalink)
References	(3 earlier) <8vnhhhFseeU1@mid.individual.net> <in67nc$rgo$2@lust.ihug.co.nz> <8vnmbrFq40U1@mid.individual.net> <in6hen$1bp$1@lust.ihug.co.nz> <8vonp8FvbaU4@mid.individual.net>

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Dirk Bruere at NeoPax wrote:
> Another problem - What does passing context to a class mean if every item and
> method in it is static?

In the example you showed it's passed to an instance, not a class.

The purpose generally, though I cannot speak to the specific fragment here, of 
the idiom is to give the instance access to class-wide information.

This is common in RMI, JNDI, EJBs (based on RMI), JPA, Spring, web apps and 
many, many other libraries.  They maintain a static context (for 
application-wide information, session-wide and other scopes) in which 
instances can share information with each other.

This is, in fact, the purpose of static members overall.  Basic, fundamental 
Java concept.

-- 
Lew
Honi soit qui mal y pense.
http://upload.wikimedia.org/wikipedia/commons/c/cf/Friz.jpg

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ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 02:03 +0100
  Re: ArrayAdapter Roedy Green <see_website@mindprod.com.invalid> - 2011-03-30 19:25 -0700
    Re: ArrayAdapter Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-03-30 19:42 -0700
      Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 04:50 +0100
  Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-03-31 16:02 +1300
  Re: ArrayAdapter Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-03-31 06:57 -0300
    Re: ArrayAdapter Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-03-31 10:19 +0000
      Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 12:21 +0100
        Java OOP tutorial (Was: ArrayAdapter) Michal Kleczek <kleku75@gmail.com> - 2011-03-31 13:52 +0200
          Re: Java OOP tutorial (Was: ArrayAdapter) Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 13:16 +0100
          Re: Java OOP tutorial (Was: ArrayAdapter) "John B. Matthews" <nospam@nospam.invalid> - 2011-03-31 16:19 -0400
        Re: ArrayAdapter Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-03-31 14:47 +0100
          Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 15:32 +0100
            Re: ArrayAdapter Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-03-31 15:42 +0100
              Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 16:35 +0100
                Re: ArrayAdapter markspace <-@.> - 2011-03-31 09:56 -0700
                Re: ArrayAdapter Patricia Shanahan <pats@acm.org> - 2011-03-31 10:09 -0700
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 21:26 +0100
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 21:29 +0100
                Re: ArrayAdapter Patricia Shanahan <pats@acm.org> - 2011-03-31 13:50 -0700
                Re: ArrayAdapter markspace <-@.> - 2011-03-31 15:27 -0700
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 00:42 +0100
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 00:38 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:08 +1300
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 01:10 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:45 +1300
        Re: ArrayAdapter Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-03-31 17:31 +0000
        Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:06 +1300
          Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 01:13 +0100
            Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:35 +1300
  Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 02:41 +0100
    Re: ArrayAdapter Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-02 04:19 +0200
      Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 03:55 +0100
        Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-02 17:12 +1300
          Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 05:18 +0100
            Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-02 19:58 +1300
              Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 14:48 +0100
                Re: ArrayAdapter Lew <noone@lewscanon.com> - 2011-04-02 10:48 -0400
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 10:50 +1200
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 01:41 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 12:53 +1200
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 02:52 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 19:56 +1200
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 17:07 +0100
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 17:27 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-04 10:19 +1200
                Re: ArrayAdapter Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-03 22:55 -0300

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