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


Groups > comp.lang.java.programmer > #14969

Re: unchecked conversion warning.

From Robert Klemme <shortcutter@googlemail.com>
Newsgroups comp.lang.java.programmer
Subject Re: unchecked conversion warning.
Date 2012-06-01 08:14 +0200
Message-ID <a2r4v1F3snU1@mid.individual.net> (permalink)
References <3s7cs7hd18l0ffci55ns0286n4lc4cutlu@4ax.com> <f9064504-3948-43d4-b66e-55434a7a1ed1@googlegroups.com> <24hfs7hqsr75jmqgk87jcpfg85kif7nhuo@4ax.com> <jq8lij$g95$1@dont-email.me>

Show all headers | View raw


On 31.05.2012 22:50, Eric Sosman wrote:
> On 5/31/2012 4:23 PM, Jens wrote:
>> On Wed, 30 May 2012 07:54:33 -0700 (PDT), Robert
>> Klemme<shortcutter@googlemail.com>
>> wrote:
>>
>>> On Wednesday, May 30, 2012 3:32:43 PM UTC+2, (unknown) wrote:
>>>
>>>> import java.util.Vector;
>>>
>>> Another remark: it is usually recommended to not use Vector any more,
>>> because the synchronization overhead is unnecessary most of the time
>>> - unless some API forces you to. The proper replacement is ArrayList.
>>> If synchronization is needed then usually
>>> Collections.synchronizedList() will do.

>> I used DefaultTableModel and Vector because it was the simplest and
>> easiest way to get the
>> project up and running. And the Oracles tutorial is, even today
>> (2012), still using this
>> approach without any remarks.

DefaultTableModel wasn't mentioned in the original post.  Then that's 
the API case I mentioned (as has been stated already).

> There's nothing fundamentally wrong with Vector. People will
> moan and wring their hands over the cost of its synchronized methods,
> but I haven't heard of any actual measurements.

You could argue whether it's worthwhile to synchronize every method. 
Note that this does not automatically give thread safety out of the box 
(concurrent iteration, multiple operations which need to be atomic) so 
Vector could give you a false impression of thread safety.  See Lew's 
remarks also.

> (JavaDoc is both a blessing and a curse: It's a blessing in that
> developers *are* encouraged to write documentation, and it's a curse
> in that *developers* are encouraged to write documentation. ;)

In what ways is that a curse?  I would actually say that the weight 
totally falls on the blessing side because JavaDoc together with modern 
IDE makes the threshold so low to write documentation that there really 
is not much of an excuse left to not do it.  And documentation is important.

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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


Thread

unchecked conversion warning. Jens - 2012-05-30 15:32 +0200
  Re: unchecked conversion warning. Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-05-30 13:48 +0000
    Re: unchecked conversion warning. Jens - 2012-05-30 15:52 +0200
  Re: unchecked conversion warning. Robert Klemme <shortcutter@googlemail.com> - 2012-05-30 07:54 -0700
    Re: unchecked conversion warning. Jens - 2012-05-31 22:23 +0200
      Re: unchecked conversion warning. Lew <lewbloch@gmail.com> - 2012-05-31 13:40 -0700
      Re: unchecked conversion warning. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-05-31 16:50 -0400
        Re: unchecked conversion warning. Lew <lewbloch@gmail.com> - 2012-05-31 17:18 -0700
        Re: unchecked conversion warning. Robert Klemme <shortcutter@googlemail.com> - 2012-06-01 08:14 +0200
          Re: unchecked conversion warning. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-01 08:48 -0400
            Re: unchecked conversion warning. Robert Klemme <shortcutter@googlemail.com> - 2012-06-01 07:32 -0700
            Re: unchecked conversion warning. Roedy Green <see_website@mindprod.com.invalid> - 2012-06-10 12:16 -0700
              Re: unchecked conversion warning. Martin Gregorie <martin@address-in-sig.invalid> - 2012-06-10 22:08 +0000
                Re: unchecked conversion warning. Lew <noone@lewscanon.com> - 2012-06-10 17:09 -0700
                Re: unchecked conversion warning. Martin Gregorie <martin@address-in-sig.invalid> - 2012-06-11 01:31 +0000
        Re: unchecked conversion warning. Jim Janney <jjanney@shell.xmission.com> - 2012-06-01 08:41 -0600
          Re: unchecked conversion warning. Patricia Shanahan <pats@acm.org> - 2012-06-01 08:44 -0700
            Re: unchecked conversion warning. markspace <-@.> - 2012-06-01 09:08 -0700
            Re: unchecked conversion warning. Gene Wirchenko <genew@ocis.net> - 2012-06-01 09:31 -0700
            Re: unchecked conversion warning. Jim Janney <jjanney@shell.xmission.com> - 2012-06-01 11:02 -0600
            Re: unchecked conversion warning. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-01 13:54 -0400
              Re: unchecked conversion warning. Patricia Shanahan <pats@acm.org> - 2012-06-01 16:44 -0700
                Re: unchecked conversion warning. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-01 20:24 -0400
                Re: unchecked conversion warning. Patricia Shanahan <pats@acm.org> - 2012-06-01 19:36 -0700
          Re: natural/native language capabilities (was: unchecked conversion warning.) Jim Janney <jjanney@shell.xmission.com> - 2012-06-01 11:01 -0600
        Re: unchecked conversion warning. Roedy Green <see_website@mindprod.com.invalid> - 2012-06-10 12:13 -0700
        Re: unchecked conversion warning. Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 19:28 -0400
  Re: unchecked conversion warning. Broad Liyn <broadliyn@gmail.com> - 2012-06-10 21:52 -0700
    Re: unchecked conversion warning. Lew <noone@lewscanon.com> - 2012-06-10 23:50 -0700
    Re: unchecked conversion warning. Patricia Shanahan <pats@acm.org> - 2012-06-11 00:06 -0700
      Re: unchecked conversion warning. Robert Klemme <shortcutter@googlemail.com> - 2012-06-16 15:17 +0200
        Re: unchecked conversion warning. Lew <lewbloch@gmail.com> - 2012-06-18 12:28 -0700
          Re: unchecked conversion warning. Robert Klemme <shortcutter@googlemail.com> - 2012-06-19 23:14 +0200
            Re: unchecked conversion warning. Lew <lewbloch@gmail.com> - 2012-06-19 17:15 -0700
      Re: unchecked conversion warning. Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 19:22 -0400
    Re: unchecked conversion warning. Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 19:20 -0400

csiph-web