Inheritance allows one class to reuse the code from another class. In SAP ABAP, this helps in building modular, reusable, and maintainable programs. Use of Inheritance in SAP Purpose
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While ABAP classes can’t inherit from multiple classes, they can implement multiple interfaces, achieving interface-based multiple inheritance. INTERFACE if1. METHODS: method1. ENDINTERFACE. INTERFACE if2. METHODS: method2. ENDINTERFACE. CLASS my_class DEFINITION. PUBLIC SECTION. INTERFACES: if1, if2. ENDCLASS. CLASS my_class IMPLEMENTATION. METHOD if1~method1. WRITE: 'Method1 from IF1'. ENDMETHOD. METHOD if2~method2. WRITE: 'Method2 from IF2'. ENDMETHOD. ENDCLASS.
A final class is declared using the keyword FINAL in its definition. It’s used when you want to prevent further inheritance of the class, ensuring its behavior cannot be modified through subclassing. Why Use a Final Class?
*--Check BOL is assigned to TU or not, if not raise error message DATA lo_tu_query TYPE REF TO /scwm/cl_sr_tu_query. DATA lo_log ...
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 ...