Object Oriented Approach - Simple ABAP Report

Simple example to show the Object Oriented Approach for ABAP Programming.


Summation of two numbers in ABAP through OO

CLASS add DEFINITION.
  PUBLIC SECTION.
    METHODS: do_sum IMPORTING p_num1 TYPE i
                              p_num2 TYPE i
                    EXPORTING p_res  TYPE i
                    .
ENDCLASS.

CLASS add IMPLEMENTATION.
  METHOD do_sum.
    p_res = p_num1 + p_num2.
  ENDMETHOD.
ENDCLASS.

SELECTION-SCREEN: BEGIN OF BLOCK b1.
PARAMETERS: p_num1 TYPE i,
            p_num2 TYPE i.
SELECTION-SCREEN: END OF BLOCK b1.

START-OF-SELECTION.
  DATA: obj_add TYPE REF TO add,
        res     TYPE i VALUE 0
        .

  CREATE OBJECT obj_add.

  CALL METHOD obj_add->do_sum
    EXPORTING
      p_num1 = p_num1
      p_num2 = p_num2
    IMPORTING
      p_res  = res.

  WRITE: res.