Local Abstract Class

Ex :-

Steps : -

• Go to Transaction Code SE38.

• Enter the program name which start's with Y or Z < program name > and click on Create.

• Enter the Title .
• Select the Attribute Type as Executable Program and click on SAVE.

Source Code

CLASS C1 DEFINITION ABSTRACT.

  PUBLIC SECTION.

  METHODS : FETCH_DATA ABSTRACT IMPORTING IM_VBELN TYPE VBAP-VBELN

                       CHANGING CH_ITAB TYPE VBAP_T,

           DISPLAY   IMPORTING IM_ITAB TYPE VBAP_T.

  PROTECTED SECTION.

  PRIVATE SECTION.

ENDCLASS.

CLASS C1 IMPLEMENTATION.

  METHOD DISPLAY.

    DATA : WA_VBAP TYPE VBAP.

    LOOP AT IM_ITAB INTO WA_VBAP.

     WRITE : / WA_VBAP-VBELN , WA_VBAP-POSNR , WA_VBAP-MATNR ,

     WA_VBAP-ARKTX, WA_VBAP-NETWR.

    ENDLOOP.

   ENDMETHOD.

ENDCLASS.

CLASS C2 DEFINITION INHERITING FROM C1.

  PUBLIC SECTION.

  METHODS : FETCH_DATA REDEFINITION.

  PROTECTED SECTION.

  PRIVATE SECTION.

ENDCLASS.

CLASS C2 IMPLEMENTATION.

  METHOD FETCH_DATA .

    SELECT * FROM VBAP INTO TABLE CH_ITAB WHERE VBELN = IM_VBELN.

  ENDMETHOD.

ENDCLASS.

" Main program

DATA : OBJ TYPE REF TO C2.

DATA : IT_VBAP TYPE TABLE OF VBAP.

PARAMETERS : P_VBELN TYPE VBAP-VBELN.

START-OF-SELECTION.

CREATE OBJECT OBJ.

CALL METHOD OBJ->FETCH_DATA

EXPORTING

  IM_VBELN = P_VBELN

CHANGING

  CH_ITAB = IT_VBAP

  .

CALL METHOD OBJ->DISPLAY

EXPORTING

  IM_ITAB = IT_VBAP.

• Save -> Check -> Activate.
• Execute ( F8 ).

Input

• Enter the Input.

Output

• Execute ( F8 ).