question: public final void clear ( ) { for ( int i = 0 ; i < FIELD_COUNT ; i ++ ) { fields [ i ] = 0 ; isSet [ i ] = false ; } areFieldsSet = isTimeSet = false ; }
target:  Clears the values of all the time fields, marking them all unset and assigning them all a value of zero. The actual field values will be determined the next time the fields are accessed.