16. Which of the following statements is true? a. An interface effectively has the exact same functionality as a java class b. An interface is like a blueprint - any class implementing an interface must implement all the functions defined in an interface c. It is possible to have concrete function definitions inside an interface d. A class can not implement more than one interface 17. Does Java use call by value or call by reference in function calls? a. Call by reference b. It depends on the context c. Call by value 18. What is the main use case of getter and setter functions in a Java classes? a. It is mandatory to have them in a Java class. b. Setting and retrieving values of variables using getters and setters is faster than directly accessing the variables. c. They allow us to get and set the values for variables declared as private. d. None of the above do gninnet:

16. Which of the following statements is true? a. An interface effectively has the exact same functionality as a java class b. An interface is like a blueprint - any class implementing an interface must implement all the functions defined in an interface c. It is possible to have concrete function definitions inside an interface d. A class can not implement more than one interface 17. Does Java use call by value or call by reference in function calls? a. Call by reference b. It depends on the context c. Call by value 18. What is the main use case of getter and setter functions in a Java classes? a. It is mandatory to have them in a Java class. b. Setting and retrieving values of variables using getters and setters is faster than directly accessing the variables. c. They allow us to get and set the values for variables declared as private. d. None of the above do gninnet:

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

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a. It is mandatory to have them in a Java class.
b. Setting and retrieving values of variables using getters and setters is faster than
directly accessing the variables.
c.
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