Decompressing Data using Java from ZLIB

hello all i really need your aid .
we have a system that needs to be changed as soon as possible
to receive a compress stream of data that was compressed using the
ZLIB (a.k.a. gzip) from the http://www.zlib.net/
and i can't manage to Decompress it
i tried to use the
1) java.util.zip.GZIPInputStream
2) java.util.zip.Inflater
3)com.jcraft.jzlib.ZInputStream
all failed...
does anybody can help me with ideas...

have you tried with
new InflaterInputStream(anInputStream, new Inflater(false));If it doesnt work, do you have a sample of the data you try to decompress?

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