Given the method listed below:B Foo(B x){return x;}Which of the below statements are correct?Foo takes 1 argumentFoo takes 2 argumentFoo is a classB is a classB is a methodFoo takes as argument any subclass of BFoo returns a value of class BIf the argument x is of class D which is a subclass of B, Foo returns a value of class BIf the argument x is of class D which is a subclass of B, Foo returns a value of class DIf the argument x is of class D which is a subclass of B, there will be a type check error

Answered: Given the method listed below: B Foo(B…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Given the method listed below:

B Foo(B x){return x;}

Which of the below statements are correct?

Foo takes 1 argument
Foo takes 2 argument
Foo is a class
B is a class
B is a method
Foo takes as argument any subclass of B
Foo returns a value of class B
If the argument x is of class D which is a subclass of B, Foo returns a value of class B
If the argument x is of class D which is a subclass of B, Foo returns a value of class D
If the argument x is of class D which is a subclass of B, there will be a type check error

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