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SAP ABAP Coding Example

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SAP ABAP Coding Example

On ABAP Coding as a SAP technical consultant should have better grip on all objects coding so that i have made small effort to gather all SAP application coding examples to understand ABAP coding ,If you new to ABAP .Here i covered all objects examples programs in one lesson .By reading this,you can understand overview of SAP ABAP program at one step and how much difficult it to understand the programming basics and code levels in ABAP .As a ABAP consultant ,you can learn here sample programs of all objects in SAP applications.

SAP ABAP Control Break Statements Example Program


REPORT  zabap_controlbreak.
TYPES: BEGIN OF ty_marc,
        matnr TYPE marc-matnr,
        werks TYPE marc-werks,
       END OF ty_marc.

DATA: it_marc TYPE STANDARD TABLE OF ty_marc,
      wa_marc TYPE ty_marc,
      wa_temp TYPE ty_marc.

SELECT matnr werks FROM marc INTO TABLE it_marc UP TO 10 ROWS WHERE matnr ge 40.
SORT it_marc BY matnr.
FIELD-SYMBOLS : <matnr> type matnr.

WRITE:/ 'FULL TABLE'.
LOOP AT it_marc INTO wa_marc.
  wa_temp = wa_marc.
  WRITE: / sy-tabix , wa_temp-matnr,  wa_temp-werks.
ENDLOOP.

WRITE:/ 'AT FIRST AND LAST'.
LOOP AT it_marc INTO wa_marc.
  wa_temp = wa_marc.
  AT FIRST.
    WRITE:/ 'First Entry'.
    WRITE:/  wa_temp-matnr,  wa_temp-werks.
  ENDAT.
  AT LAST.
    WRITE:/ 'Last Entry'.
    WRITE:/  wa_temp-matnr,  wa_temp-werks.
  ENDAT.
ENDLOOP.


WRITE:/ 'AT END OF'.
LOOP AT it_marc INTO wa_marc.
  wa_temp = wa_marc.
  AT END OF matnr.
    WRITE: / sy-tabix , wa_temp-matnr,  wa_temp-werks.
  ENDAT.
ENDLOOP.

WRITE:/ 'AT NEW'.

LOOP AT it_marc INTO wa_marc.
  wa_temp = wa_marc.
  AT NEW matnr.
    WRITE: / sy-tabix , wa_temp-matnr,  wa_temp-werks.
  ENDAT.
ENDLOOP.

WRITE:/ 'ON CHANGE OF'.
LOOP AT it_marc INTO wa_marc.
  wa_temp = wa_marc.
  ASSIGN wa_marc-matnr TO <matnr>.
  ON CHANGE OF wa_marc-matnr.
    WRITE: / sy-tabix ,wa_temp-matnr,  wa_temp-werks.
  ENDON.
ENDLOOP.

SAP ABAP Loop Program Example


DO – ENDDO – Unconditional Loop
DO can be used to execute a certain lines of codes specific number of times.

DO 5 TIMES.
  WRITE sy-index.  " SY-INDEX (system variable) - Current loop pass
ENDDO.
Output
Loops-1

WHILE ENDWHILE – Conditional Loop

WHILE can be used to execute a certain lines of codes as long as the condition is true.

WHILE sy-index < 3.
  WRITE sy-index.
ENDWHILE.


Output
Loops-2

CONTINUE – Terminate a loop pass unconditionally.

After continue the control directly goes to the end statement of the current loop pass ignoring the remaining statements in the current loop pass, starts the next loop pass.

DO 5 TIMES.
  IF sy-index = 2.
    CONTINUE.
  ENDIF.
  WRITE sy-index.
ENDDO.
Output
Loops-3

CHECK – Terminate a loop pass conditionally.

If the condition is false, the control directly goes to the end statement of the current loop pass ignoring the remaining statements in the current loop pass, starts the next loop pass.

DO 5 TIMES.
  CHECK sy-index < 3.
  WRITE sy-index.
ENDDO.
Output
Loops-4

EXIT – Terminate an entire loop pass unconditionally.

After EXIT statement the control goes to the next statement after the end of loop statement.

DO 10 TIMES.
  IF sy-index = 2.
    EXIT.
  ENDIF.
  WRITE sy-index.
ENDDO.


SAP ABAP Subroutine Example Program


FORM <subroutine name>.
 ...
ENDFORM.

A subroutine can be called using PERFORM statement.

PERFORM <subroutine name>.

Example Program.

PERFORM sub_display.
WRITE:/ 'After Perform'.

*&---------------------------------------------------------------------*
*&      Form  sub_display
*&---------------------------------------------------------------------*
FORM sub_display.
  WRITE:/ 'Inside Subroutine'.
ENDFORM.                    " sub_display
Output

ABAP Subroutine



Subroutines can call other subroutines and may also call themselves. Once a subroutine has finished running, the control returns to the next statement after the PERFORM statement.

We can terminate a subroutine by using the EXIT or CHECK statement.

EXIT statement can be used to terminate a subroutine unconditionally. The control returns to the next statement after the PERFORM statement.

PERFORM sub_display.
WRITE:/ 'After Perform Statement'.

*&---------------------------------------------------------------------*
*&      Form  sub_display
*&---------------------------------------------------------------------*
FORM sub_display.
  WRITE:/ 'Before Exit Statement'.
  EXIT.
  WRITE:/ 'After Exit Statement'.  " This will not be executed
ENDFORM.                    " sub_display
Output

Exit in ABAP Subroutine

CHECK statement can be used to terminate a subroutine conditionally. If the logical expression in the CHECK statement is untrue, the subroutine is terminated, and the control returns to the next statement after the PERFORM statement.

DATA: flag TYPE c.
DO 2 TIMES.
  PERFORM sub_display.
ENDDO.
WRITE:/ 'After Perform Statement'.

*&---------------------------------------------------------------------*
*&      Form  sub_display
*&---------------------------------------------------------------------*
FORM sub_display.
  WRITE:/ 'Before Check Statement'.

  CHECK flag NE 'X'.
  WRITE:/ 'Check Passed'.
  flag = 'X'.
ENDFORM.                    " sub_display
Output

abap-subroutine-check

Function Module Example Program



REPORT Z_abaptutor.
data result like SPELL.

selection-screen begin of line.
selection-screen comment 1(15) text-001.

parameter num_1 Type I.
selection-screen end of line.
CALL FUNCTION 'function_module'
EXPORTING
AMOUNT = num_1
IMPORTING
IN_WORDS = result.

IF SY-SUBRC <> 0.
   Write: 'Value returned is:', SY-SUBRC.
else.
   Write: 'Amount in words is:', result-word.
ENDIF.


SAP ABAP Class Example Program


Report Zabaptutor.
CLASS class1 Definition.
   PUBLIC Section.
      Data: text1 Type char25 Value 'Public Data'.
      Methods meth1.
                               
   PROTECTED Section.
      Data: text2 Type char25 Value 'Protected Data'.
                               
   PRIVATE Section.    
      Data: text3 Type char25 Value 'Private Data'.
ENDCLASS.

CLASS class1 Implementation.  
   Method meth1.    
      Write: / 'Public Method:',  
             / text1,
             / text2,
             / text3.
      Skip.
   EndMethod.
ENDCLASS.

Start-Of-Selection.  
   Data: Objectx Type Ref To class1.
   Create Object: Objectx.
   CALL Method: Objectx→meth1.
   Write: / Objectx→text1.

From this lesson,you can learn coding examples of all SAP ABAP objects used in the SAP modules.

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