Examples of Array List

The video tutorial covers the ArrayList in Java, focusing on its methods such as indexOf, size, and isEmpty. It explains how ArrayList can dynamically grow and accept duplicate values, unlike arrays. The tutorial also highlights the differences between ArrayList and arrays, and introduces the List interface, which allows duplicate values. The video concludes with a brief mention of the upcoming topic on the Set interface, which does not accept duplicates.

Which method is used to find the index of a specific element in an ArrayList?

• getIndex()

• locateIndex()

• indexOf()

• findIndex()

What does the 'isEmpty' method return if an ArrayList contains elements?

• True

• False

• Null

• An exception

How can you determine the number of elements in an ArrayList?

• Using the total method

• Using the size method

• Using the length property

• Using the count method

Can an ArrayList contain duplicate values?

• No, it cannot

• Yes, it can

• Only if specified

• Only in certain conditions

Which of the following classes does NOT implement the List interface?

• ArrayList

• HashSet

• Vector

• LinkedList

What is a key difference between arrays and ArrayLists?

• Arrays can grow dynamically

• ArrayLists have a fixed size

• ArrayLists can grow dynamically

• Arrays accept duplicate values

Which method is used to add an element to an ArrayList?

• insert()

• append()

• add()

• push()