question: public static String nanoSecToString ( long nS ) { long rem_nS = ( long ) ( nS % 1000.0 ) ; long rem_uS = ( long ) ( ( nS / 1000.0 ) % 1000.0 ) ; long rem_mS = ( long ) ( ( nS / 1000000.0 ) % 1000.0 ) ; long sec = ( long ) ( nS / 1000000000.0 ) ; String nSstr = zeroPad ( Long . toString ( rem_nS ) , 3 ) ; String uSstr = zeroPad ( Long . toString ( rem_uS ) , 3 ) ; String mSstr = zeroPad ( Long . toString ( rem_mS ) , 3 ) ; return String . format ( "%d.%3s %3s %3s" , sec , mSstr , uSstr , nSstr ) ; }
target:  Returns the given time in nanoseconds formatted as Sec.mSec uSec nSec