Method overriding allows a subclass to provide a new implementation of a method that is already defined in the superclass. The method in the subclass must use the REDEFINITION keyword. When to use it: When a general method in a ...
SAP EWM Help Latest Questions
It’s an ABAP OO class that displays data in a grid (table-like format) inside a screen container. Unlike the simpler CL_SALV_TABLE, this grid is fully interactive and customizable. Main Features Editable cells → You can let users change data directly in the grid. Field ...
Instance Members (Methods & Data) Belong to individual objects (instances). Created using DATA and METHODS. Each object has its own copy of the data. Accessed using the object reference: lo_obj->method_name. Useful when each object should maintain its own state. Destroyed when the object goes out of ...
*&———————————————————————* *& 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 ).
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 ...