inrterface – SAP EWM Help https://www.sapewmhelp.com SAP EWM questions answered by experts — ABAP, S/4HANA, warehouse management Sun, 03 Aug 2025 06:42:49 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.2 What is an Interface in SAP ABAP? https://www.sapewmhelp.com/question/what-is-an-interface-in-sap-abap/ https://www.sapewmhelp.com/question/what-is-an-interface-in-sap-abap/#respond Sun, 03 Aug 2025 06:42:49 +0000 https://www.sapewmhelp.com/?question=what-is-an-interface-in-sap-abap An interface in ABAP defines a contract that any implementing class must follow. It contains only declarations of:

  • Methods (without implementation)
  • Constants
  • Types
  • Attributes

Interfaces do not contain implementation. Any class that implements an interface must provide the logic for all its methods.

Feature Description
No implementation Only method signatures are defined.
Multiple interfaces A class can implement more than one interface.
Full implementation required All interface methods must be implemented in the class.
Promotes loose coupling Ideal for modular, testable, flexible code.

 

Code:

REPORT zrep_lclclass.

INTERFACE if_animal.
  METHODS:
    speak,
    move.
ENDINTERFACE.

" Class that implements the interface
CLASS lcl_dog DEFINITION.
  PUBLIC SECTION.
    INTERFACES: if_animal.
ENDCLASS.

CLASS lcl_dog IMPLEMENTATION.
  METHOD if_animal~speak.
    WRITE: 'Woof!'.
  ENDMETHOD.

  METHOD if_animal~move.
    WRITE: 'Dog is running'.
  ENDMETHOD.
ENDCLASS.

START-OF-SELECTION.
  DATA(lo_dog) = NEW lcl_dog( ).
  lo_dog->if_animal~speak( ).
  lo_dog->if_animal~move( ).

Output:

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