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


Groups > comp.lang.java.programmer > #17464

Re: automatically initialized to null?

Path csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail
From Eric Sosman <esosman@ieee-dot-org.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: automatically initialized to null?
Date Thu, 09 Aug 2012 14:34:21 -0400
Organization A noiseless patient Spider
Lines 24
Message-ID <k00vrg$voo$3@dont-email.me> (permalink)
References <286af465-25a1-4486-84ec-fe4d4adf6dd4@googlegroups.com> <jvuhlr$m6q$1@dont-email.me> <6fb31c61-1c6a-4652-853b-86382deb4bcf@googlegroups.com>
Mime-Version 1.0
Content-Type text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding 7bit
Injection-Date Thu, 9 Aug 2012 18:34:24 +0000 (UTC)
Injection-Info mx04.eternal-september.org; posting-host="ffb8f7085759b339c1002252b48331a4"; logging-data="32536"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18ch+DcFV4FYz89pdHWSmwm"
User-Agent Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20120713 Thunderbird/14.0
In-Reply-To <6fb31c61-1c6a-4652-853b-86382deb4bcf@googlegroups.com>
Cancel-Lock sha1:VcOlY67xYs2KNxK4V4DrFGuptSE=
Xref csiph.com comp.lang.java.programmer:17464

Show key headers only | View raw


On 8/9/2012 12:12 PM, bob smith wrote:
> On Wednesday, August 8, 2012 3:20:08 PM UTC-5, markspace wrote:
>> On 8/8/2012 12:23 PM, bob smith wrote:
>>
>>> If I have
>>> Bitmap[] bmps = new Bitmap[256];
>>> Are all 256 positions automatically initialized to null?
>>
>> Yes.  I'm sure that's in the JLS someplace.  And just about every noob
>> tutorial and "Learn Java" book.  But yes, all uninitialized static or
>> instance fields and all arrays are set to null.  Note this excludes
>> local variables.
>
> Why does Eclipse seem to frequently tell me to explicitly initialize a reference to null?
>
> Is it kind of being paranoid?

     Did you see the part about "excludes local variables?"  Maybe
that's what Eclipse is complaining about, and not about class or
instance fields, or array elements.

-- 
Eric Sosman
esosman@ieee-dot-org.invalid

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


Thread

automatically initialized to null? bob smith <bob@coolfone.comze.com> - 2012-08-08 12:23 -0700
  Re: automatically initialized to null? markspace <-@.> - 2012-08-08 13:20 -0700
    Re: automatically initialized to null? Mike Winter <usenet@michael-winter.me.invalid> - 2012-08-08 21:32 +0100
      Re: automatically initialized to null? Lew <lewbloch@gmail.com> - 2012-08-08 17:36 -0700
        Re: automatically initialized to null? Jim Gibson <jimsgibson@gmail.com> - 2012-08-08 18:06 -0700
    Re: automatically initialized to null? bob smith <bob@coolfone.comze.com> - 2012-08-09 09:12 -0700
      Re: automatically initialized to null? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-08-09 14:34 -0400
        Re: automatically initialized to null? bob smith <bob@coolfone.comze.com> - 2012-08-10 08:53 -0700
  Re: automatically initialized to null? Roedy Green <see_website@mindprod.com.invalid> - 2012-08-09 02:38 -0700

csiph-web