Re: Another topic on how to read a binary file.

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 20 May 2007 14:28:54 -0400
Message-ID:
<46509361$0$90274$14726298@news.sunsite.dk>
Knitter wrote:

I have a binary file, the Ant Movie Catalog database if anyone knows
the software. It is a file where information about movies is stores,
the software was created in Delphi so the binary files contains Pascal
strings and integers.

I know the file format, for example, I know that the strings are store
using a 4 bytes integer representing the string length, followed by
the actually string. What I'm falling to understand is how to read the
file.

I've been using BufferedInputStream created with a FileInputStream.
If I use the read(byte[]) method, that fills the passed array with the
array.lenght how can I transform that array of bytes into the integer
that I need?

So I thought of reading the 4 byte that tells me how long each string
is, convert the array with the 4 bytes into the needed integer and
then reading the string into another array with the size of the
integer I have found.

I'm stuck with how to correctly read the file, how to convert the
bytes into integers.


If you wrap your stream in a BinaryReader you will get some
convenient methods.

Arne

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