void function ( double arg0 ) { this . total += arg0 ; }
this method sums all the numbers on the list . concode_field_sep double listNumbers concode_elem_sep double average concode_elem_sep double total concode_elem_sep int counter concode_field_sep void setAverage concode_elem_sep double getListNumbers concode_elem_sep double getAverage concode_elem_sep void setListNumbers concode_elem_sep void addCounter