question: public void writeToFile ( String fileName ) throws IOException { PrintWriter outfile = new PrintWriter ( new FileOutputStream ( fileName ) ) ; outfile . println ( "// Output from Histogram class" ) ; outfile . println ( "// metaData: " ) ; outfile . println ( "bins " + m_nbins ) ; outfile . println ( "min " + m_min ) ; outfile . println ( "max " + m_max ) ; outfile . println ( "totalEntries " + m_entries ) ; outfile . println ( "underflow " + m_underflow ) ; outfile . println ( "overflow " + m_overflow ) ; outfile . println ( "// binData:" ) ; for ( int i = 0 ; i < m_nbins ; i ++ ) { outfile . println ( i + " " + m_binCenters [ i ] + " " + m_hist [ i ] ) ; } outfile . println ( "// end." ) ; outfile . close ( ) ; }
target:  Save the histogram data to a file. The file format is very simple, human-readable text so it can be imported into Excel or cut & pasted into other applications.