准备花三周时间熟悉下ABAP OO

 

1，  procedural sepration of data and function,object-oritented ,encapsulation of data and function

2，  in the object-oriented context,a;only object-oriented concepts that have proved usefull b;

increased use of type checks;c obsolete statements are prohibited

3,client/ server relationships between objects.

4,inheritance;polymorphism for support of generic programming;event controlling

5,learn to anailysis and  design wih uml

6,public access generally methods events;private access generally data types,attributes

7, All components of the class are defined in the definition part. The components are

attributes, methods, events, constants, types, and implemented interfaces. Only

methods are implemented in the implementation part.

8, The CLASS statement cannot be nested

9,reference type named:ref_xxx, ,interfaces or types

10, data; class-data

11,Tables with headers are no longer supported in the OO context.