ABAP 物件中的 Hello World

Created: November-22, 2018

PROGRAM zhello_world.

CLASS main DEFINITION FINAL CREATE PRIVATE.
  PUBLIC SECTION.
    CLASS-METHODS: start.
ENDCLASS.

CLASS main IMPLEMENTATION.
  METHOD start.
    cl_demo_output=>display( 'Hello World!' ).
  ENDMETHOD.
ENDCLASS.

START-OF-SELECTION.
  main=>start( ).