*&———————————————————————* *& Report ZCLASS_TEST_DP_1 *& *&———————————————————————* *& *& *&———————————————————————* REPORT zclass_test_dp_1. *pillars of oop ” abstraction –> hiding the data. ” encapsulation –> variable + methods. –> capsule -> 1 + 1 == ” inheritance –> parent child relation. ” –> child calss will inherit the property of parent class ” polymorphism ” multiple forms –> 1 method — same name and differe param parent ==> child class but with different paremeters. –> method overriding. ” method overloading is not there –> same 2 same name and different parameters. PARAMETERS: p_num TYPE i. DATA: lv_tot TYPE i. CLASS lcl_main DEFINITION. PUBLIC SECTION. METHODS: get_data EXPORTING iv_num TYPE i. METHODS: set_data IMPORTING ev_num TYPE i. PROTECTED SECTION. PRIVATE SECTION. DATA : lv_num1 TYPE i. ENDCLASS. CLASS lcl_main IMPLEMENTATION. METHOD set_data. lv_num1 = ev_num. ENDMETHOD. METHOD get_data. iv_num = lv_num1. ENDMETHOD. ENDCLASS. ” inheritance class lcl_child DEFINITION INHERITING FROM lcl_main. PUBLIC SECTION. METHODS: get_data REDEFINITION. METHODS: set_data REDEFINITION. PROTECTED SECTION. PRIVATE SECTION. data lv_child type i value 4. ENDCLASS. class lcl_child IMPLEMENTATION. method get_Data. ” method overriding * ev_tot = iv_num + iv_num2. ” child will gor the child methods first then to parent method. super->get_data( IMPORTING iv_num = iv_num ). ” way to calling the parent method ENDMETHOD. method set_Data. * ev_tot = iv_num + iv_num2. ” child will gor the child methods first then to parent method. super->set_data( EXPORTING ev_num = ev_num ). ” way to calling the parent method ENDMETHOD. ENDCLASS. START-OF-SELECTION. DATA(lo_obj) = NEW lcl_main( ). DATA(lo_obj_child) = NEW lcl_child( ). lo_obj_child->set_data( EXPORTING ev_num = p_num ).
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Polymorphism allows different classes to be treated through a common parent reference, while still calling their own version of a method at runtime. When to use it: When you want to treat multiple objects generically, but still get their specific behavior. In ...
A Singleton class is a design pattern that restricts the instantiation of a class to one single object throughout the lifecycle of a program. This is useful when exactly one object is needed to coordinate actions across the system — such as logging, configuration ...
A constructor is a special method automatically called when an object is created using CREATE OBJECT or NEW. Types of Constructors in ABAP Type Method Name Called On Purpose Instance Constructor CONSTRUCTOR When an ...
An abstract class is a class that cannot be instantiated directly. It serves as a blueprint for other classes. Abstract classes typically include: Abstract methods, which are declared but not implemented. Concrete methods, which can be implemented and inherited. Feature Description Not instantiable Cannot use CREATE ...