public WritableGridFileChannel getWritableChannel(String pathname, boolean append) throws IOException {
      return getWritableChannel(pathname, append, defaultChunkSize);
   }
public WritableGridFileChannel getWritableChannel ( String pathname , boolean append ) throws IOException { return getWritableChannel ( pathname , append , defaultChunkSize ) ; }
Opens a WritableGridFileChannel for writing to the file denoted by pathname. The channel can either overwrite the
existing file or append to it.
@param pathname the path to write to
@param append if true, the bytes written to the WritableGridFileChannel will be appended to the end of the file.
If false, the bytes will overwrite the original contents.
@return a WritableGridFileChannel for writing to the file at pathname
@throws IOException if an error occurs