Binary JAR file format

Hi out there,
does anybody know where I can find the specification for the binary JAR file format?
It doesn't follow the ZIP spec, there must be some additions.
Here is my problem:
I'm reading the 1. local file header, there compressed and uncompresed size is 0. Bit 3 of the
general purpose bit flag is not set so there is no Data descriptor section and there should also be no
file data section (size is 0, extra field also 0). But there are still some
bytes until the next local file header starts. What are the bytes in between??
Somewhere in the middle of the 2 local file headers is the 0x08074b50 signature, which is mentioned
in the zip spec in combination with Spanned/Split archives !??
If I'm reading a ZIP file generated with WinZip it is working fine, but when I'm reading a jar generated with
the jar tool there are this mysterious bytes, which I cannot interpret.
Thanks in advance for your help.
Cheers,
Steffen

okay, guys just in case someone is interested (doesn't seem like, but anyhow):
YES, the jar tool is not sticking exactly to the zip specification. I found out when I was
browsing through the source code of the java distribution. The local file headers are not
filled with the size information!
Quote: * We'd like to initialize the sizes from the LOC, but unfortunately
* some ZIPs, including the jar command, don't put them there.The solution for it, which I think is the standard for zip processing anyhow, is reading the
central directory of the zip file first. There you get all info including also the size, etc. of the entries
and also the offset to the local file header.
The drawback is that it's a little more complex to read a file from the end and not from the beginning
because you have to find the beginning of the central directory first, but well ...
Okay, that's it. Have fun!

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Title:
Moving Data Between MATLAB® and LabVIEW
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Solution:
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>
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same? what does "same" mean?Main Entry: 1same <http://www.m-w.com/images/audio.gif>
Pronunciation: 'sAm
Function: adjective
Date: 13th century
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