Groups > comp.lang.java.programmer > #32935

Re: number to byte[]

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From	Lothar Kimmeringer <news200709@kimmeringer.de>
Newsgroups	comp.lang.java.programmer
Subject	Re: number to byte[]
Date	Sun, 25 Oct 2015 10:22:31 +0100
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Askfor wrote:

> I am trying to get 4 byte[] representation of an integer, which might be 
> 32 bit long.
> 
> Obviously, I could AND with 255 and take byteValue(), then shift 8 times 
> to the right and repeat the process 3 times. Is there any more elegant way ?

You could use BigInteger.toByteArray but I think you should stick
with the ANDing (put it in a helper method), since the mentioned
returns a byte-array of variable size (with five elements for
values > 0x0fffffff).


Cheers, Lothar
-- 
Lothar Kimmeringer                E-Mail: spamfang@kimmeringer.de
               PGP-encrypted mails preferred (Key-ID: 0x8BC3CD81)

Always remember: The answer is forty-two, there can only be wrong
                 questions!

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Thread

number to byte[] Askfor <askfor@nowhere.net> - 2015-10-17 10:02 +0200
  Re: number to byte[] Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-10-17 08:03 -0400
    Re: number to byte[] Askfor <askfor@nowhere.net> - 2015-10-17 23:03 +0200
      Re: number to byte[] Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-10-17 17:45 -0400
        Re: number to byte[] Askfor <askfor@nowhere.net> - 2015-10-18 12:13 +0200
          Re: number to byte[] Askfor <askfor@nowhere.net> - 2015-10-18 12:44 +0200
            Re: number to byte[] Lew <lewbloch@gmail.com> - 2015-11-29 23:07 -0800
          Re: number to byte[] Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-10-18 08:40 -0400
      Re: number to byte[] Nigel Wade <nmw@ion.le.ac.uk> - 2015-10-19 10:43 +0100
        Re: number to byte[] Wayne <nospam@all.invalid> - 2015-10-20 00:45 -0400
        Re: number to byte[] Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2015-10-20 13:35 -0700
  Re: number to byte[] Lothar Kimmeringer <news200709@kimmeringer.de> - 2015-10-25 10:22 +0100

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