Hi every one,

I'm new to Java and POI. Forgive me if the question is stupid. 

I wrote the program to test POI, but dataStream is "empty". Any help is
appreciated.


import java.io.FileInputStream;
import java.io.IOException;

import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;

public class PoiTest {
        public static void main( String[] args ) throws IOException {
        String fileName = "C:/hello.doc";
        POIFSFileSystem fs = new POIFSFileSystem( new FileInputStream( fileName 
)
);
        HWPFDocument document = new HWPFDocument(fs);
        byte[] stream = document.getDataStream();
        System.out.println( stream.length );
        }
}


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