Global Class : Passing parameters ( Parameter and Internal table ) to methods

Steps

• Go to transaction code SE24.

• Enter the Object Type as class name which start's with YCL or ZCL< class name > and click on create,

• Pop-up will appear.

• Enter the Description and click on Save.

      

• Enter the method name.
• Select the level.
• Select the visibility and description.

• Click on Method name and click on Parameters Button.

• Initial screen looks like,

• Enter the import parameter name ,

• Click on Type.

• Click on F4 help and Select the Type.

• Click on Associated Type.

• Enter the associated type and press Enter.

• Enter the parameter name.

• Select the type using F4 help.

• Enter the Associated type as Table Type and press Enter.

• Click on Save and back button.

• Double click on method (FETCH_DATA).

• Screen looks like,

• Write the logic.

• Save it.
• Click on back button.

• Enter the method name.
• Select the Level  and Visibility  .
• Enter the description.

• Select the method and click on Parameters button.

• Screen looks like,

• Enter the parameter name.
• Enter the Type.
• Enter the Associated Type and press Enter.

• Save it and click on back button.

• Double click on method.

• Initial screen looks like,

• Write the logic,

• Logic,

method DISPLAY.

  

  DATA : WA TYPE MAKT.

  

  LOOP AT  IM_ITAB INTO WA.

    

    WRITE : / WA-MATNR , WA-SPRAS , WA-MAKTX.

  ENDLOOP.

endmethod.

• Save  and click on back button.

• Save -> Check -> Activate.

Usage of Class

• Go to transaction code SE38.

• Enter the program name , start's  with Y or Z< program name > and click on create button.

• Enter the Title.
• Select attribute type as : Executable program.
• Click on Save button.

Source code

DATA : OBJ TYPE REF TO ZCL_PARAM_ITAB.

DATA : IT TYPE TABLE OF MAKT.

PARAMETERS : P_MATNR TYPE MAKT-MATNR.

START-OF-SELECTION.

CREATE OBJECT OBJ.

CALL METHOD OBJ->FETCH_DATA

  EXPORTING

    IM_MATNR =  P_MATNR

  CHANGING

    CH_ITAB  = IT

    .

CALL METHOD OBJ->DISPLAY

  CHANGING

    IM_ITAB = IT

    .

• Save -> Check -> Activate.

• Click on execute (F8).

Input

• Enter the Input.

• Click on execute.

Output