ArrayList Quize

Question 1

You can increase and decrease the size of an Array

Answer

true

Question 2

Which of the properties are the properties of an ArrayList?

Accepted Answer

It implements the interface List

Accepted Answer

It maintains it insertion

Accepted Answer

It allows null values to be added

Answer

It doesn't allow duplicate value to be added to it

Question 3

What happens when you create the following object of an ArrayList? ArrayList anArrList = new ArrayList<>();

Accepted Answer

the no-argument constructor defined in the class ArrayList.java, constructs an empty list with an initial capacity of ten

Answer

the no-argument constructor defined in the class ArrayList.java, construct an empty list with an no capacity

Answer

Non of the above

Question 4

Which of the statements are true ?

Accepted Answer

ArrayList defines a instance variable of type Array to store all it's individual elements

Accepted Answer

The capacity of the ArrayList is the length of this instance variable

Answer

ArrayList defines a instance variable of type List to store all it's individual elements

Answer

All are true

Question 5

The reference to the  instance variable that stores the element of the ArrayList is: elementData

Answer

true

Question 6

The method addAll (Collection<? extends E> c) appends all the elements in the specified collection's to the end of this list, in the order they're returned by the specified iterator.

Answer

true

Question 7

An Array can accept duplicate object values

Answer

true

Question 8

What does clone method defined in the class ArrayList doe ? Which of the statements are true?

Accepted Answer

Both of the answers are true

Answer

It creates a new instance of the ArrayList to be cloned

Answer

It copies the element references, but not the objects

Answer

Non of the above

ArrayList Quize

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