ADF : How to Export data from excel(.csv) to ADF table ?

ADF : How to Export data from excel(.csv) to ADF table ?











  public void fileUploaded(ValueChangeEvent valueChangeEvent) {
    // Add event code here...   
    UploadedFile file = (UploadedFile)valueChangeEvent.getNewValue();
    try {
      AdfFacesContext.getCurrentInstance().addPartialTarget(staffTable);
      parseFile(file.getInputStream());
     
    } catch (IOException e) {
      // TODO add more
    }
  }


  public void parseFile(java.io.InputStream file) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(file));
    String strLine = "";
    StringTokenizer st = null;
    int lineNumber = 0, tokenNumber = 0;
    Row rw = null;
  
    CollectionModel _tableModel = (CollectionModel)staffTable.getValue();
    //the ADF object that implements the CollectionModel is JUCtrlHierBinding. It
    //is wrapped by the CollectionModel API
    JUCtrlHierBinding _adfTableBinding =
        (JUCtrlHierBinding)_tableModel.getWrappedData();
    //Acess the ADF iterator binding that is used with ADF table binding
    DCIteratorBinding it =
        _adfTableBinding.getDCIteratorBinding();
        
    //read comma separated file line by line
    try
    {
      while ((strLine = reader.readLine()) != null)
      {
        lineNumber++;
        // create a new row skip the header  (header has linenumber 1)          
        if (lineNumber>1)        {
           rw = it.getNavigatableRowIterator().createRow();
           rw.setNewRowState(Row.STATUS_INITIALIZED);
           it.getNavigatableRowIterator().insertRow(rw);
        }
       
        //break comma separated line using ","
        st = new StringTokenizer(strLine, ",");
        while (st.hasMoreTokens())
        {
          //display csv values
          tokenNumber++;
         
          String theToken = st.nextToken();
          System.out.println("Line # " + lineNumber + ", Token # " +
              tokenNumber +
              ", Token : " + theToken);
          if (lineNumber>1){
        
            switch (tokenNumber) {
            case 1: rw.setAttribute("Id", theToken);
            case 2: rw.setAttribute("FirstName", theToken);
            case 3: rw.setAttribute("LastName", theToken);
            case 4: rw.setAttribute("EmailAddress", theToken);                    
          }
        }
      }
      //reset token number       
      tokenNumber = 0;   
     }
    }
    catch (IOException e) {
      // TODO add more
      FacesContext fctx = FacesContext.getCurrentInstance();
      fctx.addMessage(staffTable.getClientId(fctx), new FacesMessage(FacesMessage.SEVERITY_ERROR,
         "Content Error in Uploaded file", e.getMessage()));
    }
    catch (Exception e) {
    FacesContext fctx = FacesContext.getCurrentInstance();
    fctx.addMessage( null, new FacesMessage(FacesMessage.SEVERITY_ERROR,
       "Data Error in Uploaded file", e.getMessage()));
     
    }
  }