void close() throws IOException ;

void close ( ) throws IOException ;
closes the reader iff it is open . < p > note : closing a reader does not have a side - effect on any open reader or writer for the same file . specifically , if two readers are open for the same file and one is closed , then other will remain open . likewise , if a reader is open for the live halog file , closing the writer will not close the reader and closing the reader will not close the writer .
