Collection framework

Question 1

What is collection framework

Answer 1

it is a framework that provides an architecture to manipulate and store group of object

Question 2

what collection framework does

Answer 2

it performs operations on data such as searching sorting inserting, manipulating and deleting

Question 3

what interfaces and classes does this have

Answer 3

Java Collection means a single unit of objects. Java Collection framework provides many interfaces (Set, List, Queue, Deque) and classes (ArrayList, Vector, LinkedList, PriorityQueue, HashSet, LinkedHashSet, TreeSet).

Question 4

What is a framework in Java

Answer 4

It provides readymade architecture.
It represents a set of classes and interfaces.
It is optional.

Question 5

Why we need collections?

Answer 5

because if we want to assign a huge no. of varaibles say 10,000 variable is is difficult to do so .. it can be done using arrays were multiple elements can be assigned into a single varible but array is not standard data structure and has fixed size so we use collections as it is standard data structure provides inbuilt method and has varible size

Question 6

difference between arrays and collections

Answer 6

refer notebook

Question 7

what is collection

Answer 7

when group of individual object represented as a single entity

Question 8

what is collection framework

Answer 8

defines several classes and interfaces which can be used to represent a group of object as single entity

Question 9

What are the 9 key interfaces of collection framework

Question 10

what is collection interface

Answer 10

collection interface consists of the most common methods that are applicable for any collection objects

Question 11

what is the difference between collection and collections