public DocumentDescriptor(String name,
    POIFSDocumentPath path,
    DocumentInputStream stream,
    int nrOfBytes) 
{
        this.name = name;
        this.path = path;
        this.stream = stream;
        try
        {
            size = stream.available();
            if (stream.markSupported())
            {
                stream.mark(nrOfBytes);
                final byte[] b = new byte[nrOfBytes];
                final int read = stream.read(b, 0, Math.min(size, b.length));
                bytes = new byte[read];
                System.arraycopy(b, 0, bytes, 0, read);
                stream.reset();
            }
        }
        catch (IOException ex)
        {
            System.out.println(ex);
        }
}

Creates a DocumentDescriptor .

Parameters:

name - The stream's name.

path - The stream's path in the POI filesystem hierarchy.

stream - The stream.

nrOfBytes - The maximum number of bytes to display in a dump starting at the beginning of the stream.