Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.programmer > #23198

Re: Inserting In a List

From Martin Gregorie <martin@address-in-sig.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: Inserting In a List
Date 2013-04-02 22:52 +0000
Organization UK Free Software Network
Message-ID <kjfnf3$k7l$1@localhost.localdomain> (permalink)
References <d4ecae37-89d4-4747-a8ae-aea86fbbecf2@googlegroups.com> <myList-20130402133907@ram.dialup.fu-berlin.de> <ZKz6t.393788$kp4.308027@newsfe09.iad> <kjfh97$i51$3@localhost.localdomain> <kjfljm$fej$1@dont-email.me>

Show all headers | View raw

On Tue, 02 Apr 2013 18:22:55 -0400, Eric Sosman wrote:

> On 4/2/2013 5:06 PM, Martin Gregorie wrote:
>>[...]
>> Its also not clear to me whether the OP is expecting some form of
>> sorted list of filenames. If he is expecting that, it would be best to
>> use a TreeMap<String> rather than an ArrayList<String> to store the
>> filenames.
> 
>      Is there a reason to prefer TreeMap (or other SortedMap) over
> accumulate-disordered-and-sort-afterward?
>
I think so, yes, because none of File's list() and listFiles() methods 
guarantee the order of the returned files. By using TreeMap or equivalent 
the OP gets the sort for free, should it be required.

I use it a lot, both for that and because accessing stored objects by key 
from a TreeMap is almost certainly faster than scanning an ArrayMap 
unless it contains very few objects indeed. 


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Inserting In a List subhabangalore@gmail.com - 2013-04-02 03:11 -0700
  Re: Inserting In a List Roedy Green <see_website@mindprod.com.invalid> - 2013-04-02 03:59 -0700
  Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-02 08:27 -0300
  Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-02 08:59 -0300
    Re: Inserting In a List Martin Gregorie <martin@address-in-sig.invalid> - 2013-04-02 21:06 +0000
      Re: Inserting In a List Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-02 18:22 -0400
        Re: Inserting In a List Martin Gregorie <martin@address-in-sig.invalid> - 2013-04-02 22:52 +0000
          Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-03 02:04 +0200
            Re: Inserting In a List Arne Vajhøj <arne@vajhoej.dk> - 2013-04-02 20:20 -0400
              Re: Inserting In a List Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-02 21:03 -0400
                Re: Inserting In a List Arne Vajhøj <arne@vajhoej.dk> - 2013-04-02 21:26 -0400
                Re: Inserting In a List Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-02 22:29 -0400
                Re: Inserting In a List Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:16 -0400
              Re: Inserting In a List Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2013-04-02 20:26 -0500
                Re: Inserting In a List Arne Vajhøj <arne@vajhoej.dk> - 2013-04-02 21:29 -0400
                Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 14:07 +0200
            Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-03 05:45 -0300
              Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-03 15:26 +0200
                Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-03 18:09 -0300
                Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 00:54 +0200
                Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-03 20:30 -0300
                Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 01:35 +0200
                Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-03 20:55 -0300
                Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 02:00 +0200
                Re: Inserting In a List Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 19:49 -0400
            Re: Inserting In a List Martin Gregorie <martin@address-in-sig.invalid> - 2013-04-03 22:43 +0000
              Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 01:08 +0200
                Re: Inserting In a List Martin Gregorie <martin@address-in-sig.invalid> - 2013-04-04 00:42 +0000
                Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 14:12 +0200
                Re: Inserting In a List Martin Gregorie <martin@address-in-sig.invalid> - 2013-04-04 21:47 +0000
                Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-05 00:36 +0200
          Re: Inserting In a List Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-02 21:08 -0400
            Re: Inserting In a List Martin Gregorie <martin@address-in-sig.invalid> - 2013-04-03 22:37 +0000
              Re: Inserting In a List Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-03 20:50 -0400
  Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-02 14:35 +0200
    Re: Inserting In a List lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-02 15:08 +0100
      Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-02 21:06 +0200
        Re: Usefulness of "final" (Was: Re: Inserting In a List) Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-02 16:41 -0400
          Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-03 08:09 +0200
            Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:13 -0400
        Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-02 20:08 -0400
        Re: Usefulness of "final" (Was: Re: Inserting In a List) lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-03 11:15 +0100
          Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-03 19:08 +0200
            Re: Usefulness of "final" (Was: Re: Inserting In a List) lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-03 19:51 +0100
              Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-03 21:01 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 14:15 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 18:22 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 15:41 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 19:56 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 16:58 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:08 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 17:21 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:27 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 17:34 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-03 21:20 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 19:17 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Lew <lewbloch@gmail.com> - 2013-04-03 20:45 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 21:30 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 14:34 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 09:52 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-05 00:39 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-04 19:50 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-04 08:27 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 09:47 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-04 19:44 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 11:08 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-04 22:53 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 14:29 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-05 21:54 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-04 19:48 +0100
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:05 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 17:24 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:32 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 18:34 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 21:54 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-03 21:25 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 18:37 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 21:57 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 19:23 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Wanja Gayk <brixomatic@yahoo.com> - 2013-04-06 21:58 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-06 17:19 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Wanja Gayk <brixomatic@yahoo.com> - 2013-04-07 17:28 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-07 09:02 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Wanja Gayk <brixomatic@yahoo.com> - 2013-04-07 19:20 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Wanja Gayk <brixomatic@yahoo.com> - 2013-04-07 19:24 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Lew <lewbloch@gmail.com> - 2013-04-03 18:41 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Lew <lewbloch@gmail.com> - 2013-04-03 18:31 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 18:46 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Lew <lewbloch@gmail.com> - 2013-04-03 20:09 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 20:47 -0700
                Re: Usefulness of "final" Leif Roar Moldskred <leifm@dimnakorr.com> - 2013-04-04 00:42 -0500
                Re: Usefulness of "final" paul.cager@gmail.com - 2013-04-04 01:55 -0700
                Re: Usefulness of "final" Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 14:45 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 00:46 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 16:10 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 01:25 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 16:44 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 01:57 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 17:19 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 14:35 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 10:34 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-05 00:43 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 16:22 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Lew <lewbloch@gmail.com> - 2013-04-04 16:49 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-04 18:21 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Lew <lewbloch@gmail.com> - 2013-04-04 18:49 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-05 05:30 -0300
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arne Vajhøj <arne@vajhoej.dk> - 2013-04-03 20:10 -0400
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-03 17:29 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 02:53 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Jim Janney <jjanney@shell.xmission.com> - 2013-04-04 13:51 -0600
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-06 13:31 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) markspace <markspace@nospam.nospam> - 2013-04-06 10:50 -0700
                Re: Usefulness of "final" (Was: Re: Inserting In a List) lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-04 09:09 +0100
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-04 05:37 -0300
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-04 06:10 -0300
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-04 19:40 -0300
                Re: arrays and variables Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-05 05:44 -0300
                Re: arrays and variables lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-05 14:08 +0100
                Re: arrays and variables Lew <lewbloch@gmail.com> - 2013-04-05 13:33 -0700
                Re: arrays and variables lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-06 09:11 +0100
                Re: arrays and variables Robert Klemme <shortcutter@googlemail.com> - 2013-04-06 15:20 +0200
                Re: arrays and variables lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-06 16:25 +0100
                Re: arrays and variables Robert Klemme <shortcutter@googlemail.com> - 2013-04-06 17:50 +0200
                Re: arrays and variables lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-06 18:13 +0100
                Re: arrays and variables Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-06 14:32 -0300
                Re: arrays and variables Robert Klemme <shortcutter@googlemail.com> - 2013-04-06 15:02 +0200
                Re: arrays and variables Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-05 22:12 -0300
                Re: Usefulness of "final" (Was: Re: Inserting In a List) lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-04 10:35 +0100
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 14:02 +0200
                Re: Usefulness of "final" (Was: Re: Inserting In a List) lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-04 13:41 +0100
                Re: Usefulness of "final" (Was: Re: Inserting In a List) Joerg Meier <joergmmeier@arcor.de> - 2013-04-04 13:53 +0200
              Re: Usefulness of "final" (Was: Re: Inserting In a List) Robert Klemme <shortcutter@googlemail.com> - 2013-04-03 23:05 +0200
      Re: Inserting In a List Joerg Meier <joergmmeier@arcor.de> - 2013-04-02 22:09 +0200
      Re: Inserting In a List Arne Vajhøj <arne@vajhoej.dk> - 2013-04-02 20:03 -0400
      Re: Inserting In a List Wanja Gayk <brixomatic@yahoo.com> - 2013-04-06 21:39 +0200
        Re: Inserting In a List Robert Klemme <shortcutter@googlemail.com> - 2013-04-07 01:08 +0200
        Re: Inserting In a List Lew <lewbloch@gmail.com> - 2013-04-06 22:15 -0700
          Re: Inserting In a List lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-07 08:48 +0100
            Re: Inserting In a List Lew <lewbloch@gmail.com> - 2013-04-07 12:32 -0700
              Re: Inserting In a List "John B. Matthews" <nospam@nospam.invalid> - 2013-04-07 21:06 -0400
              Re: Inserting In a List lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-08 08:40 +0100
        Re: Inserting In a List lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-07 08:55 +0100
          Re: Inserting In a List Wanja Gayk <brixomatic@yahoo.com> - 2013-04-07 17:54 +0200
            Re: Inserting In a List lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-07 19:53 +0100
              Re: Inserting In a List Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-04-07 17:58 -0300
              Re: Inserting In a List Robert Klemme <shortcutter@googlemail.com> - 2013-04-08 08:28 +0200
                Re: Inserting In a List lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-04-08 08:54 +0100
                Re: Inserting In a List Robert Klemme <shortcutter@googlemail.com> - 2013-04-08 19:13 +0200
              Re: Inserting In a List Wanja Gayk <brixomatic@yahoo.com> - 2013-04-12 20:58 +0200
                Re: Inserting In a List Lew <lewbloch@gmail.com> - 2013-04-12 13:17 -0700
            Re: Inserting In a List Lew <lewbloch@gmail.com> - 2013-04-07 12:40 -0700
              Re: Inserting In a List Wanja Gayk <brixomatic@yahoo.com> - 2013-04-12 20:47 +0200
                Re: Inserting In a List Lew <lewbloch@gmail.com> - 2013-04-12 13:14 -0700
  Re: Inserting In a List Steven Simpson <ss@domain.invalid> - 2013-04-02 13:53 +0100
  Re: Inserting In a List Roedy Green <see_website@mindprod.com.invalid> - 2013-04-02 07:10 -0700
  Re: Inserting In a List Lew <lewbloch@gmail.com> - 2013-04-02 10:46 -0700
    Re: Inserting In a List markspace <markspace@nospam.nospam> - 2013-04-02 11:28 -0700
      Re: Inserting In a List Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-04-02 16:00 -0400
  Re: Inserting In a List subhabangalore@gmail.com - 2013-04-03 01:47 -0700
    Re: Inserting In a List Steven Simpson <ss@domain.invalid> - 2013-04-03 10:35 +0100

csiph-web