Conversely, the classes become more generalized until you reach the root node of the inheritance tree.The root node of all inheritance trees in ABAP Objects is the predefined empty class OBJECT. This is the most generalized class possible, since it contains neither attributes nor methods. When yo...
SAP ABAP Inheritance - Learn about inheritance in SAP ABAP, including its types, advantages, and how to implement it effectively in your programming.
The left-hand part of the graphic shows how you can derive a subclass c2 from a superclass c1 using the INHERTING FROM addition in the CLASS statement. The right-hand part of the graphic shows the distribution of the subclass in the inheritance tree, which stretches back to the default ...
SAP ABAP 继承 面向对象编程中最重要的概念之一是继承。继承让我们可以根据一个类定义另一个类,这使得创建和维护应用程序更加容易。这也提供了重用代码功能和加快实现时间的机会。创建类时,程序员可以指定新类应继承现有类的成员,而不是编写全新的数据成员和方法。这个现有类称为 基类 或超类,新类称为 派生类 或...
Example of protected components Within a subnode in the inheritance tree, you can always access the protected components of superclasses. The classes involved, such as the static types of reference variables, must however be part of the inheritance tree. ...
Example Calls a static method of a superclass using the name of a subclass. Before the method is executed, the static constructor of the superclass is executed, but not the static constructor of the subclass. The method returns the value that is set in the superclass. ...
Conversely, the classes become more generalized until you reach the root node of the inheritance tree.The root node of all inheritance trees in ABAP Objects is the predefined empty class OBJECT. This is the most generalized class possible, since it contains neither attributes nor methods. When yo...
The left-hand part of the graphic shows how you can derive a subclass c2 from a superclass c1 using the INHERTING FROM addition in the CLASS statement. The right-hand part of the graphic shows the distribution of the subclass in the inheritance tree, which stretches back to the default ...