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|---|---|
| From | Robert Klemme <shortcutter@googlemail.com> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: bit package |
| Date | Sat, 17 Feb 2018 16:23:38 +0100 |
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On 17.02.2018 09:33, Philipp Kraus wrote:
> Hello,
>
> I'm building a network communication protocol for hardware-communication, so I need a bit representation of my dara like a C struct:
>
> struct
> {
> unint8 field1;
> unint16 field2;
> ...
> }
>
> On my Java classes I have got int, long, ... so how can I create such bit structures?
> My first try is to use a BitSet and convert all datatypes manually, but is there a better possibility to create such bit sequences. I need a sending and receiving structure. I'm working with Java 9.
>
> I the best case I create an object like
>
> BitObject l_obj = new BitObject( 8, 16, 8, 32 );
> l_object.set(0, mybyte)
> l_object.set(1, myshort)
> l_object.set(2, mybyte)
> l_object.set(3, myint)
>
> and on reseiving
>
> BitObject l_obj = new BitObject( mybytearray_from_socket, 8, 16, 8, 32 );
> l_obj.get(0)
> l_obj.get(1)
> ...
>
> Can you suggest a library or anything for doing this?
> Thanks
You could use ASN.1 or Google's "Protocol Buffers". There are plenty of
libs around:
https://duckduckgo.com/?q=java+asn.1&ia=qa
https://developers.google.com/protocol-buffers/
https://developers.google.com/protocol-buffers/docs/javatutorial
Kind regards
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
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bit package Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2018-02-17 00:33 -0800
Re: bit package Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-02-17 07:14 -0500
Re: bit package Kiwi User <martin@mydomain.invalid> - 2018-02-17 12:40 +0000
Re: bit package Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-02-17 08:16 -0500
Re: bit package Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2018-02-17 07:51 -0800
Re: bit package Arne Vajhøj <arne@vajhoej.dk> - 2018-02-17 11:11 -0500
Re: bit package Philipp Kraus <philipp.kraus.flashpixx@gmail.com> - 2018-02-17 11:41 -0800
Re: bit package Arne Vajhøj <arne@vajhoej.dk> - 2018-02-17 14:55 -0500
Re: bit package Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-02-17 11:12 -0500
Re: bit package Arne Vajhøj <arne@vajhoej.dk> - 2018-02-17 12:27 -0500
Re: bit package Daniele Futtorovic <da.futt.news@laposte.net> - 2018-02-17 20:55 +0100
Re: bit package Robert Klemme <shortcutter@googlemail.com> - 2018-02-17 16:23 +0100
Re: bit package Arne Vajhøj <arne@vajhoej.dk> - 2018-02-17 10:25 -0500
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