Oops concepts in abap - please help me

Question

Hi ,
   can any one help me how to move ahead in abap with oops concepts.
   Please explain me concepts with small example program.
Regards
Vijaya

Answer 1

Hi learn the concepts of oops and then the syntax 
of the statements. Find the pgrm if it useful for u                                                                               
*& Report  Z_CLASS_DEMO1                                               *
REPORT  Z_CLASS_DEMO1                           .
      CLASS vehicle DEFINITION
class vehicle definition.
  public section.
    methods: create.
    events: vehicle_created.
endclass.                    "vehicle DEFINITION
      CLASS vehicle IMPLEMENTATION
class vehicle implementation.
  method create.
   break-point.
   write:/ 'vehicle is created'.
   raise event vehicle_created.
  endmethod.
endclass.                    "vehicle IMPLEMENTATION
      CLASS reg_office DEFINITION
class reg_office definition.
  public section.
    methods: add_vehicle FOR EVENT vehicle_created of VEHICLE.
endclass.                    "reg_office DEFINITION
      CLASS reg_office IMPLEMENTATION
class reg_office implementation.
  method add_vehicle.
    write:/ 'Vehicle is created and is ready for registration'.
  endmethod.                    "reg_office
endclass.                    "reg_office IMPLEMENTATION
start-of-selection.
  data: r_vehicle type ref to vehicle,
        r_reg_office type ref to reg_office.
  create object r_vehicle.
  create object r_reg_office.
  set handler r_reg_office->add_vehicle for all instances.
  r_vehicle->create( ).