problem with returning parameter

[Former Member]

Hi all,

i was trying to do this basic abap program using classes, but i am geting the error " method get_data does npt have returning parameter".

the code is:

*---------------------------------------------------------------------*
*       CLASS main DEFINITION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS MAIN DEFINITION.

  PUBLIC SECTION.

    METHODS ADD_DATA IMPORTING I_DATA TYPE I.

    METHODS GET_DATA EXPORTING E_DATA TYPE CHAR20.

  PRIVATE SECTION.

    DATA ATTRIBUTE TYPE CHAR01.

ENDCLASS.                    "main DEFINITION



*---------------------------------------------------------------------*
*       CLASS main IMPLEMENTATION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS MAIN IMPLEMENTATION.


  METHOD ADD_DATA.

    ADD I_DATA TO ATTRIBUTE.

  ENDMETHOD.                    "add_data


  METHOD GET_DATA.

    CONCATENATE 'attribute value' ATTRIBUTE INTO E_DATA SEPARATED BY SPACE.

  ENDMETHOD.                    "get_data


ENDCLASS.                    "main IMPLEMENTATION


DATA: OB_REF TYPE  REF TO MAIN.


START-OF-SELECTION.

  CREATE OBJECT OB_REF.


 DATA: VAR TYPE CHAR20.

  OB_REF->ADD_DATA( I_DATA = 3 ).

  VAR = OB_REF->GET_DATA( ).

  WRITE VAR.

please help me , what mistake i am doing.

Please use code tags

Edited by: Rob Burbank on Mar 9, 2009 4:23 PM

[former_member376453]

Hi use the below code,

*---------------------------------------------------------------------*
*       CLASS main DEFINITION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS main DEFINITION.

  PUBLIC SECTION.

    METHODS add_data IMPORTING i_data TYPE i.

    METHODS get_data  RETURNING VALUE(V) TYPE char20.
*EXPORTING e_data TYPE char20
  PRIVATE SECTION.

    DATA attribute TYPE char01.

ENDCLASS.                    "main DEFINITION



*---------------------------------------------------------------------*
*       CLASS main IMPLEMENTATION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS main IMPLEMENTATION.


  METHOD add_data.

    ADD i_data TO attribute.

  ENDMETHOD.                    "add_data


  METHOD get_data.

    CONCATENATE 'attribute value' attribute INTO v SEPARATED BY space.

  ENDMETHOD.                    "get_data




ENDCLASS.                    "main IMPLEMENTATION


DATA: ob_ref TYPE  REF TO main.


START-OF-SELECTION.

  CREATE OBJECT ob_ref.


  DATA: var TYPE char20.

  ob_ref->add_data( i_data = 3 ).

  var = ob_ref->get_data( ).

  WRITE var.

[RichHeilman]

Or you can keep it defined as an exporting parameter and change the method call to this.

ob_ref->get_data( importing e_data = var ).

Regards,

Rich Heilman

Edited by: Rich Heilman on Mar 9, 2009 9:08 PM

updated error in coding

[former_member376453]

Rich,

In that case we are directly passing the value to 'var', it should be only :

ob_ref->get_data( importing e_data = var ).

Kuntal

[RichHeilman]

Oh yes, ooops, copy/paste error.

Thanks,

Rich Heilman