Juntar (Merging) dois arquivos do word (.doc)

// POI apparently cant create a document from scratch,  
            // so we need an existing empty dummy document  
            HWPFDocument doc = new HWPFDocument(new FileInputStream(D:\\tmp.doc));  
            Range range = doc.getRange();  
  
              
            //I can get the entire Document and insert it in the tmp.doc  
            //However any formatting in my word document is lost.  
            HWPFDocument doc2 = new HWPFDocument(new FileInputStream(D:\\doc1.doc));  
            Range range2 = doc2.getRange();  
            range.insertAfter(range2.text());  
  
            //I can get the information (text only) for each character run/paragraph or section.  
            //Again any formatting in my word document is lost.  
            HWPFDocument doc3 = new HWPFDocument(new FileInputStream(D:\\doc2.doc));  
            Range range3 = doc3.getRange();  
            for(int i=0;irange3.numCharacterRuns();i++){  
                CharacterRun run3 = range3.getCharacterRun(i);  
                range.insertAfter(run3.text());  
            }  
              
            OutputStream out = new FileOutputStream(D:\\result.doc);  
            doc.write(out);  
            out.flush();  
            out.close();