void function ( ) { }
flushes this output stream and forces any buffered output bytes to be written out . the general contract of flush is that calling it is an indication that , if any bytes previously written have been buffered by the implementation of the output stream , such bytes should immediately be written to their intended destination . the flush method of outputstream does nothing . concode_field_sep PlaceHolder placeHolder concode_field_sep void write concode_elem_sep void write concode_elem_sep void write concode_elem_sep void close