class / method, - simple example

[Former Member]

Hi,

What ia a class / method, give me one simple example of this usage.

why we wanted to use this.

and also show me one real time scenario for my understanding.

regards

raj

• i already browsed the forum......they also explained ....but i couldn't understand.

[Former Member]

Hi,

Please refer to the link below:

http://www.saptechnical.com/Tutorials/OOPS/MainPage.htm

Thanks,

Sriram Ponna.

[Former Member]

Demo program illustrating Simple class and Super class

*&---------------------------------------------------------------------*
*& Report  Z_OOABAP18                                                  *
*&                                                                     *
*&---------------------------------------------------------------------*
*&                                                                     *
*&                                                                     *
*&---------------------------------------------------------------------*REPORT  Z_OOABAP18                              .CLASS lcl_employee DEFINITION.
  PUBLIC SECTION.
*--------------------------------------------------------------------
* The public section is accesible from outside
*--------------------------------------------------------------------
    TYPES:
      BEGIN OF t_employee,
        no  TYPE i,
        name TYPE string,
     END OF t_employee.
    METHODS:
      constructor
        IMPORTING im_employee_no TYPE i
                  im_employee_name TYPE string,
      display_employee.
*   Class methods are global for all instances
    CLASS-METHODS: display_no_of_employees.
  PROTECTED SECTION.
*--------------------------------------------------------------------
* The protecetd section is accesible from the class and its subclasses
*--------------------------------------------------------------------
*   Class data are global for all instances
    CLASS-DATA: g_no_of_employees TYPE i.
  PRIVATE SECTION.
*--------------------------------------------------------------------
* The private section is only accesible from within the classs
*--------------------------------------------------------------------
DATA: g_employee TYPE t_employee.
ENDCLASS.
*--- LCL Employee - Implementation
CLASS lcl_employee IMPLEMENTATION.
  METHOD constructor.
    g_employee-no = im_employee_no.
    g_employee-name = im_employee_name.
    g_no_of_employees = g_no_of_employees + 1.
  ENDMETHOD.
  METHOD display_employee.
    WRITE:/ 'Employee', g_employee-no, g_employee-name.
  ENDMETHOD.
  METHOD display_no_of_employees.
    WRITE: / 'Number of employees is:', g_no_of_employees.
  ENDMETHOD.
ENDCLASS.
************************************************************************
* R E P O R T
*********************************************************************
DATA: g_employee1 TYPE REF TO lcl_employee,
      g_employee2 TYPE REF TO lcl_employee.
START-OF-SELECTION.
  CREATE OBJECT g_employee1
    EXPORTING im_employee_no = 1
              im_employee_name = 'Vikram.C'.
  CREATE OBJECT g_employee2
    EXPORTING im_employee_no = 2
              im_employee_name = 'Raghava.V'.
  CALL METHOD g_employee1->display_employee.
  CALL METHOD g_employee2->display_employee.

Cheers,

Chandru