void function ( String arg0 ) { this . surname = arg0 ; }
sets the surname of a clubmember concode_field_sep String firstname concode_elem_sep String surname concode_elem_sep int yearOfJoining concode_field_sep void setFirstName concode_elem_sep int getYearOfJoining concode_elem_sep boolean equals concode_elem_sep String toString concode_elem_sep void setYearOfJoining concode_elem_sep String getFirstName concode_elem_sep String getSurname