ABAP - Deferred Definition Of A Class - OOPS Concept.

report ysubdel1.

CLASS C2 DEFINITION DEFERRED.

CLASS C1 DEFINITION.
PUBLIC SECTION.
DATA O2 TYPE REF TO C2.
ENDCLASS.

CLASS C2 DEFINITION.
public section.
data : num type i value 5.
ENDCLASS.

start-of-selection.
data : obj1 type ref to C1.
CREATE OBJECT obj1.
create object obj1->o2.
write:/5 obj1->o2->num .

Output 5