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Re: How to convert image into Hex 2 Dimensional Array?

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From Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: How to convert image into Hex 2 Dimensional Array?
Date Wed, 08 May 2013 21:45:13 -0400
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On 5/8/2013 9:04 PM, Arne Vajhøj wrote:
> On 5/8/2013 9:57 AM, lipska the kat wrote:
>> [...] the following two lines are
>> logically equivalent.
>>
>> 1. Byte[][] bytes = new Byte[width][height];
>> 2. byte[][] bytes = new byte[width][length]
>
> Not at all.
>
> You will eventually end up with 1+width*height and 1 objects respectively.

     No; both will generate 1+width objects:

     - One array containing `width' references to other arrays,

     - `width' arrays containing `height' bytes or Byte
       references.

     A *really* stupid coder might use Byte[][] *and* populate
the arrays with `new Byte(value)' repeated `width*height' times;
that would produce `1 + width + width*height' objects in all.
Autoboxers would be unlikely to enter that particular trap --
but even so, a four- to eight-fold memory bloat is not to be
sneezed at.

-- 
Eric Sosman
esosman@comcast-dot-net.invalid

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Thread

How to convert image into Hex 2 Dimensional Array? sout saret <saretmis097@gmail.com> - 2013-05-07 23:30 -0700
  Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 09:06 +0100
    Re: How to convert image into Hex 2 Dimensional Array? Joerg Meier <joergmmeier@arcor.de> - 2013-05-08 12:29 +0200
      Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 13:28 +0100
    Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-08 15:19 +0200
      Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 14:57 +0100
        Re: How to convert image into Hex 2 Dimensional Array? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-05-08 08:22 -0700
          Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 17:03 +0100
            Re: How to convert image into Hex 2 Dimensional Array? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-05-08 13:44 -0700
          Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 17:48 +0100
            Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-08 21:10 -0400
          Re: How to convert image into Hex 2 Dimensional Array? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-05-08 12:52 -0400
        Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-08 17:32 +0200
          Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 17:17 +0100
            Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-08 18:46 +0200
              Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 18:25 +0100
                Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-08 23:24 +0200
        Re: How to convert image into Hex 2 Dimensional Array? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2013-05-08 11:46 -0500
        Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-08 21:04 -0400
          Re: How to convert image into Hex 2 Dimensional Array? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-05-08 21:45 -0400
            Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-08 21:59 -0400
              Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-08 22:03 -0400
                Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-09 04:09 +0200
                Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-09 04:09 +0200
                Re: How to convert image into Hex 2 Dimensional Array? Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-05-08 23:18 -0400
                Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-09 22:05 -0400
                Re: How to convert image into Hex 2 Dimensional Array? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-05-10 09:46 -0700
                Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-10 19:02 +0200
                Re: How to convert image into Hex 2 Dimensional Array? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-05-10 11:00 -0700
                Re: How to convert image into Hex 2 Dimensional Array? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-05-10 23:42 +0200
                Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-10 18:20 -0400
    Re: How to convert image into Hex 2 Dimensional Array? Jeff Higgins <jeff@invalid.invalid> - 2013-05-08 12:43 -0400
      Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 18:45 +0100
  Re: How to convert image into Hex 2 Dimensional Array? Jeff Higgins <jeff@invalid.invalid> - 2013-05-08 11:18 -0400
  Re: How to convert image into Hex 2 Dimensional Array? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2013-05-08 11:52 -0500
    Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 18:40 +0100
      Re: How to convert image into Hex 2 Dimensional Array? Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2013-05-08 13:54 -0500
        Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-08 20:43 +0100
        Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-11 09:28 +0100
          Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-11 08:50 -0400
            Re: How to convert image into Hex 2 Dimensional Array? lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-05-11 15:00 +0100
              Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-12 21:45 -0400
  Re: How to convert image into Hex 2 Dimensional Array? Manuel Dahmen <manuel.dahmen@gmail.com> - 2013-05-08 15:38 -0700
  Re: How to convert image into Hex 2 Dimensional Array? Roedy Green <see_website@mindprod.com.invalid> - 2013-05-11 13:33 -0700
    Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-12 21:48 -0400
      Re: How to convert image into Hex 2 Dimensional Array? markspace <markspace@nospam.nospam> - 2013-05-12 20:49 -0700
        Re: How to convert image into Hex 2 Dimensional Array? Arne Vajhøj <arne@vajhoej.dk> - 2013-05-13 19:08 -0400
        Re: How to convert image into Hex 2 Dimensional Array? Roedy Green <see_website@mindprod.com.invalid> - 2013-05-15 03:45 -0700
        Re: How to convert image into Hex 2 Dimensional Array? Roedy Green <see_website@mindprod.com.invalid> - 2013-05-15 03:50 -0700

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