question: public synchronized String format ( long inDate ) { long seconds = inDate / 1000 ; if ( seconds < _lastSeconds || _lastSeconds > 0 && seconds > _lastSeconds + __hitWindow ) { Date d = new Date ( inDate ) ; return _tzFormat . format ( d ) ; } if ( _lastSeconds == seconds ) return _lastResult ; Date d = new Date ( inDate ) ; long minutes = seconds / 60 ; if ( _lastMinutes != minutes ) { _lastMinutes = minutes ; _secFormatString = _minFormat . format ( d ) ; int i = _secFormatString . indexOf ( "ss" ) ; int l = 2 ; _secFormatString0 = _secFormatString . substring ( 0 , i ) ; _secFormatString1 = _secFormatString . substring ( i + l ) ; } _lastSeconds = seconds ; StringBuilder sb = new StringBuilder ( _secFormatString . length ( ) ) ; sb . append ( _secFormatString0 ) ; int s = ( int ) ( seconds % 60 ) ; if ( s < 10 ) sb . append ( '0' ) ; sb . append ( s ) ; sb . append ( _secFormatString1 ) ; _lastResult = sb . toString ( ) ; return _lastResult ; }
target:  Format a date according to our stored formatter.