File(OutputStream os,
    WorkbookSettings ws,
    CompoundFile rcf) throws IOException 
{
                          
    outputStream = os;
    workbookSettings = ws;
    readCompoundFile = rcf;
    createDataOutput();
}

Constructor

Parameters:

os - the output stream

ws - the configuration settings for this workbook

rcf - the rea compound file

  void close(boolean cs) throws JxlWriteException, IOException 
{
    CompoundFile cf = new CompoundFile(data, 
                                       data.getPosition(), 
                                       outputStream, 
                                       readCompoundFile);
    cf.write();
    outputStream.flush();
    data.close();
    if (cs)
    {
      outputStream.close();
    }
    // Cleanup the memory a bit
    data = null;
    if (!workbookSettings.getGCDisabled())
    {
      System.gc();
    }
}

Closes the file. In fact, this writes out all the excel data to disk using a CompoundFile object, and then frees up all the memory allocated to the workbook

 int getPos() throws IOException 
{
    return data.getPosition();
}

Gets the current position within the file

  void setData(byte[] newdata,
    int pos) throws IOException 
{
    data.setData(newdata, pos);
}

Used to manually alter the contents of the written out data. This is used when cross-referencing cell records

 public  void setOutputFile(OutputStream os) throws IOException 
{
    if (data != null)
    {
      logger.warn("Rewriting a workbook with non-empty data");
    }
    outputStream = os;
    createDataOutput();
}

Sets a new output file. This allows the same workbook to be written to various different output files without having to read in any templates again

 public  void write(ByteData record) throws IOException 
{
    byte[] bytes = record.getBytes();
    data.write(bytes);
}

Adds the biff record data to the memory allocated for this File