topic Hi all problem in demo OOPS program in Application Development and Automation Discussions

Hi all problem in demo OOPS program

Former Member — Mon, 06 Aug 2007 14:08:07 GMT

I have written small abap-oops program but it is giving error that

The line type of "OBJ" must be compatible with one of the types

"<b>OBJ_RECORD</b>".

Plz help me out.

REPORT zkclass1.

----

CLASS number1 DEFINITION

----

........ *

----

CLASS number1 DEFINITION.

PUBLIC SECTION.

METHODS : constructor IMPORTING x1 TYPE i

y1 TYPE i.

METHODS : findsum EXPORTING z TYPE i.

PRIVATE SECTION.

DATA : x TYPE i,

y TYPE i.

ENDCLASS.

----

CLASS number IMPLEMENTATION

----

........ *

----

CLASS number1 IMPLEMENTATION.

METHOD constructor.

x = x1.

y = y1.

ENDMETHOD.

METHOD findsum.

z = x + y.

WRITE : / z.

ENDMETHOD.

ENDCLASS.

DATA : obj TYPE REF TO number1.

DATA : z1 TYPE i.

PARAMETERS : s_x1 type i obligatory.

PARAMETERS : s_y1 type i obligatory.

START-OF-SELECTION.

CREATE OBJECT obj EXPORTING x1 = s_x1

y1 = s_y1.

CALL METHOD OF OBJ -> FINDSUM EXPORTING x1 = s_x1

y1 = s_y1.

Re: Hi all problem in demo OOPS program

Former Member — Mon, 06 Aug 2007 14:16:01 GMT

CALL METHOD OF OBJ -> FINDSUM EXPORTING x1 = s_x1

y1 = s_y1.

The above method is not called with proper interface parameters. Please check it once.

This method is having one export parameter which should be a IMPORT parameter here.

Message was edited by:

Raghavendra Goutham

Re: Hi all problem in demo OOPS program

Former Member — Mon, 06 Aug 2007 14:22:50 GMT

How should i defined it ?

I wanna print addition of two no's given by user.

Re: Hi all problem in demo OOPS program

marcelo_ramos1 — Mon, 06 Aug 2007 14:26:52 GMT

Hi,

Try this way.

*------------------------------------------------------------------*
* CLASS number1 DEFINITION
*------------------------------------------------------------------*
* ........ *
*------------------------------------------------------------------*
CLASS number1 DEFINITION.
  PUBLIC SECTION.
    METHODS : constructor IMPORTING x1 TYPE i
                                    y1 TYPE i.
    METHODS : findsum EXPORTING z TYPE i
                                y1 type i. "Changed
  PRIVATE SECTION.
    DATA : x TYPE i,
    y TYPE i.

ENDCLASS.
*------------------------------------------------------------------*
* CLASS number IMPLEMENTATION
*------------------------------------------------------------------*
* ........ *
*------------------------------------------------------------------*
CLASS number1 IMPLEMENTATION.

  METHOD constructor.
    x = x1.
    y = y1.
  ENDMETHOD.

  METHOD findsum.
    z = x + y.
    y1 = me->y. "Changed
    WRITE : / z.
  ENDMETHOD.

ENDCLASS.

DATA : obj TYPE REF TO number1.
DATA : z1 TYPE i.

PARAMETERS : s_x1 TYPE i OBLIGATORY.
PARAMETERS : s_y1 TYPE i OBLIGATORY.

START-OF-SELECTION.
  CREATE OBJECT obj EXPORTING x1 = s_x1
                              y1 = s_y1.

"Use This way here.
  CALL METHOD obj->findsum IMPORTING z = s_x1
                                     y1 = s_y1.

" Don't use this here.                        
*CALL METHOD OF OBJ -> FINDSUM EXPORTING x1 = s_x1
*y1 = s_y1.                          " 'OF' is used for OLE Objects

Regards.

Marcelo Ramos