Q8. Write a declaration of a private field named department that can hold an ArrayList. The elementsof the ArrayList are of type Student. Write an assignment to the department variable to create anappropriate ArrayList object.Q9. (A) If a collection stores 20 objects, what value would be returned from a call to its size method?(B) Write a method call using get to return the fifth object stored in a collection called department.Q10. Write a method call to add the object held in the variable student1 to a collection departmentfiles.

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Q8. Write a declaration of a private field named department that can hold an ArrayList. The elements of the ArrayList are of type Student. Write an assignment to the department variable to create an appropriate ArrayList object.

Q8. Write a declaration of a private field named department that can hold an ArrayList. The elements of the ArrayList are of type Student. Write an assignment to the department variable to create an appropriate ArrayList object.

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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Concept explainers

Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.

Question

Q8. Write a declaration of a private field named department that can hold an ArrayList. The elements
of the ArrayList are of type Student. Write an assignment to the department variable to create an
appropriate ArrayList object.
Q9. (A) If a collection stores 20 objects, what value would be returned from a call to its size method?
(B) Write a method call using get to return the fifth object stored in a collection called department.
Q10. Write a method call to add the object held in the variable student1 to a collection department
files.

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