OOABAP

[128]

Hello everyone, please help me with the following question:

You have a superclass super1 and a subclass sub1 of super1. Each class has an instance constructor and a static constructor. The first statement of the program created an instance of sub1. In which sequence will the constructors be executed?

a. Class constructor of super1

b. Instance constructor of sub1

c. Instance constructor of super 1

d. Class constructor of sub1.

[Sandra_Rossi]

Nice interview question. What do you think?

[Surendra_Karma]

Sequence of Constructor Calls
https://learning.sap.com/learning-journeys/acquire-core-abap-skills/implementing-inheritance_bfdb59f...

[Surendra_Karma]

When a program tries to create an instance of the sub class, the runtime system automatically calls the static constructors sequentially, starting at the top of the inheritance hierarchy. Once all of the static constructors have run, the runtime system calls the instance constructor of the subclass, starting at the bottom of the inheritance hierarchy. So, the sequence would be: 1.) Static Constructor of super1. 2.) Static Constructor of sub1. 3.) Instance Constructor of sub1 4.) Instance Constructor of super1

[Sijin_Chandran · Accepted solution]

Hello,

The right sequence is:

1.) Static Constructor of super1.

2.) Static Constructor of sub1.

3.) Instance Constructor of sub1

4.) Instance Constructor of super1 finally!

Refer the below SAP link for better understanding,

https://learning.sap.com/learning-journeys/acquire-core-abap-skills/implementing-inheritance_bfdb59f...

Thanks,

Sijin

[Sandra_Rossi · Accepted solution]

Aligned to the OP question, the exact answer would be {a, d, b, c} :

a. Class constructor of super1

d. Class constructor of sub1.

b. Instance constructor of sub1

c. Instance constructor of super 1

[Sijin_Chandran · Accepted solution]

Yeah with 'Static Constructor' I meant CLASS_CONSTRUCTOR only, just aligned the name as per Standard SAP document 🙂

[Soumya_Roy19]

 correct options