Re: Writing Little Endian Binary Data (Was: Long in the...)

["Scott P. Smith" <ssmith@scott-smith.com>]

That sounds like the way to go, if you use JDK 1.4.  I was actually about to
buy the O'Reilly NIO book yesterday on Amazon, but did not complete the
transaction.  I think I will today.  I've been meaning to look at it.

I assume that's as good a book as any?

Scott


----- Original Message -----
From: "Gregory Pierce" <gregorypierce@mac.com>
To: "Atlanta Java Users Group" <ajug-members@ajug.org>
Sent: Thursday, April 10, 2003 11:16 AM
Subject: Re: Writing Little Endian Binary Data (Was: Long in the...)


> Just as an observation, I have been doing something similar - only
> using the ByteBuffer classes in NIO and just changing the byteorder to
> whatever order I needed the data in. Seemed to be easier and worked
> cleanly with the Channel API in 1.4+.
>
> On Thursday, April 10, 2003, at 08:24  AM, Scott P. Smith wrote:
>
> > Rob,
> >
> > Someone mentioned the Apache POI project earlier.  The
> > org.apache.poi.util
> > package in that project has what you need, I think.  That project has
> > do to
> > all the kind of stuff you are doing, so the code is there somewhere.
> > Look at
> > the org.apache.poi.util.LittleEndian class.  It reads (and writes)
> > different
> > primitive data types from (to) a byte array.  Of course, you would use
> > this
> > class in combination with a java.io.BufferedInputStream and/or a
> > java.io.BufferedOutputStream.
> >
> > Scott Smith
> >
> > ----- Original Message -----
> > From: "Rob Rutherford" <rrutherford@dglenn.com>
> > To: "Atlanta Java Users Group" <ajug-members@ajug.org>
> > Sent: Wednesday, April 09, 2003 10:47 PM
> > Subject: Re: Looking for Long Tooth...
> >
> >
> >>
> >> Hello all,
> >>
> >> I'm new to AJUG, and fairly new to the Atlanta area, (actually
> >> Columbus), and I've been lurking on the list for the past couple of
> >> months.  This topic strikes me as highly relavant to what I'm doing
> >> right now.
> >>
> >> I have a binary formatted file consisting of unsigned binary data
> >> types,
> >> (bytes through longs) with mixed big endian and little endian fields.
> >> Does anybody have any suggestions for handeling such a beast?
> >>
> >>
> >> Thanks
> >> Rob Rutherford
> >>
> >>
> >>
> >> On Wed, 2003-04-09 at 09:31, Scott P. Smith wrote:
> >>
> >>> * Non-Java Binary File I/O - When working with binary files that were
> >>> created in C, C++, etc. you will see a lot of use of things like
> > unsigned
> >>> 16, and 32 bit values. Since Java doesn't support these, you have to
> >>> use
> >>> bitwise operators to put the uint16 into a Java int32. And vise
> >>> versa.
> >>>
> >>
> >>
> >>
> >
>
>