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Groups > comp.lang.java.programmer > #2755

Re: java.lang vs java.util

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"Arved Sandstrom" <asandstrom3minus1@eastlink.ca> wrote in message 
news:tYElp.789$rB2.37@newsfe21.iad...
> On 11-04-02 02:52 AM, Lew wrote:
>> On 04/02/2011 12:23 AM, Patricia Shanahan wrote:
>>> On 4/1/2011 9:11 PM, Lawrence D'Oliveiro wrote:
>>>> Surprising to see something defined in java.lang
>>>> <http://developer.android.com/reference/java/lang/Iterable.html>
>>>> depend on
>>>> something defined in java.util
>>>> <http://developer.android.com/reference/java/util/Iterator.html>.
>>>>
>>>> Surely the hierarchy should go the other way?
>>
>> Not if it wants to be consistent with
>> http://download.oracle.com/javase/6/docs/api/
>> don't'cha think?
>>
>> And the so-called "hierarchy" of java.util and java.lang is that they
>> are equal.  The language reserves for itself the entire panoply of
>> java.* and javax.* packages.
>>
>>> I think Iterable may make it into java.lang because of its significance
>>> in the foreach statement.
>>
>> That seems to go against Java's history of conservatism with respect to
>> backward compatibility.  And why should it?  java.lang and java.util are
>> equal.  The language reserves for itself the entire panoply of java.*
>> and javax.* packages.
>>
> java.util from Day One has simply been a grab-bag package. The name
> "util" already says "we didn't know where else to put it". It's a bad
> example and a bad naming choice which has led to innumerable copycats in
> the form of not only third-party org.foo.util packages, but the
> inevitable follow-on, FooUtils classes (which are almost invariably
> grab-bag classes).

Collections certainly deserve their own package.  And arrays should 
implement List, as they do in .NET.  (Arrays of objects, anyway -- there are 
obvious issues with arrays of primitives.) 

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java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-02 17:11 +1300
  Re: java.lang vs java.util Patricia Shanahan <pats@acm.org> - 2011-04-01 21:23 -0700
    Re: java.lang vs java.util Lew <noone@lewscanon.com> - 2011-04-02 01:52 -0400
      Re: java.lang vs java.util Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-02 09:50 -0300
        Re: java.lang vs java.util David Lamb <dalamb@cs.queensu.ca> - 2011-04-02 09:12 -0400
          Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 12:37 +1200
            Re: java.lang vs java.util David Lamb <dalamb@cs.queensu.ca> - 2011-04-03 08:05 -0400
          Re: java.lang vs java.util Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-03 09:33 -0300
        Re: java.lang vs java.util "Mike Schilling" <mscottschilling@hotmail.com> - 2011-04-02 07:57 -0700
          Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 12:38 +1200
  Re: java.lang vs java.util Roedy Green <see_website@mindprod.com.invalid> - 2011-04-01 23:43 -0700
    Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-02 19:52 +1300
      Re: java.lang vs java.util David Lamb <dalamb@cs.queensu.ca> - 2011-04-03 08:05 -0400
        Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-04 10:11 +1200
          Re: java.lang vs java.util Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-03 19:25 -0300
            Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-04 12:49 +1200
              Re: java.lang vs java.util Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-03 22:50 -0300
                Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-04 16:05 +1200
                Re: java.lang vs java.util Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-04 07:06 -0300
                Re: java.lang vs java.util Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-04 23:10 +1200
                Re: java.lang vs java.util Leif Roar Moldskred <leifm@dimnakorr.com> - 2011-04-04 06:20 -0500
                Re: java.lang vs java.util rossum <rossum48@coldmail.com> - 2011-04-04 15:22 +0100
                Re: java.lang vs java.util Patricia Shanahan <pats@acm.org> - 2011-04-04 05:58 -0700
                Re: java.lang vs java.util Lew <noone@lewscanon.com> - 2011-04-06 15:34 -0400
                Re: java.lang vs java.util rossum <rossum48@coldmail.com> - 2011-04-07 10:22 +0100
                Re: java.lang vs java.util David Lamb <dalamb@cs.queensu.ca> - 2011-04-04 18:41 -0400
                Re: java.lang vs java.util Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-04 07:04 -0300
                Re: java.lang vs java.util Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-04-04 07:58 -0400
                Re: java.lang vs java.util David Lamb <dalamb@cs.queensu.ca> - 2011-04-04 18:46 -0400
  Re: java.lang vs java.util Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-04-02 16:22 -0400

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