How to create a Word Document using Apache POI?

package org.poi.images;

import java.io.File;   
  import java.io.FileOutputStream;   
  import org.apache.poi.xwpf.usermodel.XWPFDocument;   
  import org.apache.poi.xwpf.usermodel.XWPFParagraph;   
  import org.apache.poi.xwpf.usermodel.XWPFRun;   
  public class DocFile {   
    public void newWordDoc(String filename, String fileContent)   
         throws Exception {   
       XWPFDocument document = new XWPFDocument();   
       XWPFParagraph tmpParagraph = document.createParagraph();   
       XWPFRun tmpRun = tmpParagraph.createRun();   
       tmpRun.setText(fileContent);   
       tmpRun.setFontSize(18);   
       FileOutputStream fos = new FileOutputStream(new File("C:\\Users\\amitabh\\Pictures\\pics\\"+filename + ".doc"));   
       document.write(fos);   
       fos.close();   
    }   
    public static void main(String[] args) throws Exception {   
         DocFile app = new DocFile();   
         app.newWordDoc("testfile", "Hi hw r u?");   

    }   
  }