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Groups > comp.lang.java.programmer > #32889

Re: number to byte[]

From Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: number to byte[]
Date 2015-10-17 08:03 -0400
Organization A noiseless patient Spider
Message-ID <mvtd9u$c4m$1@dont-email.me> (permalink)
References <mvsv9r$ohb$1@ls237.t-com.hr>

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On 10/17/2015 4:02 AM, 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 ?

     I can't think of one, off-hand.

     But *why* do you want this four-byte array?  Are you planning to
write it to some output destination?  If so, perhaps you should use a
DataOutputStream (or other DataOutput implementation) and call its
writeInt() method.  Or, perhaps you should use an IntBuffer.  What
are you trying to do?

-- 
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM

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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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