C-ABAPD-2309試験無料問題集「SAP Certified Associate - Back-End Developer - ABAP Cloud 認定」
As a consultant you are posed the following question from a client who is using SAP S/4HANA Cloud, public edition and also SAP BTP, ABAP environment.
"We are currently using an SAP Fiori app based on SAP Fiori elements that analyzes open orders. We have determined that it should be extended via a new button on the UI which will perform an on- the-fly calculation and display the result in a quick popup for the enduser. We have been informed by SAP that all underlying stack layers for the SAP Fiori app have been extensibility enabled." Based on this which of the following extension types would you recommend to the customer to add the new button?
"We are currently using an SAP Fiori app based on SAP Fiori elements that analyzes open orders. We have determined that it should be extended via a new button on the UI which will perform an on- the-fly calculation and display the result in a quick popup for the enduser. We have been informed by SAP that all underlying stack layers for the SAP Fiori app have been extensibility enabled." Based on this which of the following extension types would you recommend to the customer to add the new button?
正解：B
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You have a superclass superl and a subclass subl of superl. Each class has an instance constructor and a static constructor. The first statement of your program creates an instance of subl. In which sequence will the constructors be executed?
正解：
Explanation:
The sequence in which the constructors will be executed is as follows:
* Class constructor of superl. This is because the class constructor is a static method that is executed automatically before the class is accessed for the first time. The class constructor is used to initialize the static attributes and components of the class. The class constructor of the superclass is executed before the class constructor of the subclass, as the subclass inherits the static components of the superclass12
* Class constructor of subl. This is because the class constructor is a static method that is executed automatically before the class is accessed for the first time. The class constructor is used to initialize the static attributes and components of the class. The class constructor of the subclass is executed after the class constructor of the superclass, as the subclass inherits the static components of the superclass12
* Instance constructor of superl. This is because the instance constructor is an instance method that is executed automatically when an instance of the class is created using the statement CREATE OBJECT.
The instance constructor is used to initialize the instance attributes and components of the class. The instance constructor of the superclass is executed before the instance constructor of the subclass, as the subclass inherits the instance components of the superclass. The instance constructor of the subclass must call the instance constructor of the superclass explicitly using super->constructor, unless the superclass is the root node object12
* Instance constructor of subl. This is because the instance constructor is an instance method that is executed automatically when an instance of the class is created using the statement CREATE OBJECT.
The instance constructor is used to initialize the instance attributes and components of the class. The instance constructor of the subclass is executed after the instance constructor of the superclass, as the subclass inherits the instance components of the superclass. The instance constructor of the subclass must call the instance constructor of the superclass explicitly using super->constructor, unless the superclass is the root node object12 References: Constructors of Classes - ABAP Keyword Documentation, METHODS - constructor - ABAP Keyword Documentation