ArrayList in Java - Multiple Choice Questions (MCQs)

Multiple Choice Quiz

1:What is an ArrayList in Java?

a) A fixed-size array.
b) A resizable array
c) A multi-dimensional array

2: Which package is ArrayList class a part of in Java?

a) java.array
b) java.lang
c) java.util.

3:Which method is used to retrieve an element from a specific index in an ArrayList?

a) fetch()
b) get()
c) retrieve()

4:Which of the following methods is used to remove an element from an ArrayList?

a) remove()
b) delete()
c) pop()

5: Which of the following methods is used to get the size of an ArrayList?

a) length()
b) size()
c) getSize()

6: Which of the following methods is used to sort an ArrayList?

a) arrange()
b) order()
c) sort()

7:What happens if you try to access an index that is out of bounds in an ArrayList?

a) The ArrayList automatically resizes to accommodate the index.
b) An IndexOutOfBoundsException is thrown.
c) The element at that index is set to null.

8:Which of the following statements is true about ArrayLists?

a) ArrayList can store objects of any type.
b) ArrayList can store a maximum of 100 elements.
c) ArrayList can only store primitive data types.

9:Which of the following is true about ArrayList's capacity?

a) It remains fixed after initialization
b) It dynamically decreases as needed
c) It dynamically increases as needed.

10: What is the purpose of the remove() method in ArrayList?z

a) Removes the first element.
b) Removes the element at a specified index.
c) Removes the last element.

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