How to count the days between Date Range using OO ABAP?

hi experts,
i want to count the days between Date Range using OO ABAP for that which class and method can i use?.
Thanks,
Mahesh.

Not sure I understand the requirement for it to be OO, but you could always write your own (i.e. use this):
REPORT zz_date_diff.
CLASS date_diff DEFINITION.
PUBLIC SECTION.
    METHODS diff IMPORTING     i_date_fm TYPE d
                               i_date_to TYPE d
                 EXPORTING     e_days    TYPE i.
ENDCLASS."
CLASS date_diff IMPLEMENTATION.
METHOD diff.
    e_days = i_date_to - i_date_fm.
ENDMETHOD."
ENDCLASS."
DATA: g_ref TYPE REF TO date_diff,
      g_days TYPE i,
      g_date_fm TYPE d VALUE '20080101',
      g_date_to TYPE d VALUE '20090101'.
START-OF-SELECTION.
CREATE OBJECT g_ref.
CALL METHOD g_ref->diff
    EXPORTING
      i_date_fm = g_date_fm
      i_date_to = g_date_to
    IMPORTING
      e_days    = g_days.
WRITE g_days.

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