Core Java Programming Course- List Iterator

The video tutorial explains the concept of list iterators in Java, demonstrating how to create and use them to iterate over lists. It covers iterating in both forward and reverse order, starting from a specific index, and performing operations like removing null values and converting odd numbers to even. The tutorial provides practical examples to illustrate these concepts.

What is one of the main advantages of using a list iterator?

• It automatically removes duplicate elements.

• It increases the list's capacity.

• It enables iteration in both forward and reverse order.

• It allows for faster sorting of elements.

Which method would you use to check if there is a next element in the list?

• hasPrevious()

• next()

• previous()

• hasNext()

What happens to the cursor when the next() method is called?

• It moves to the end of the list.

• It resets to the start of the list.

• It remains at the current position.

• It moves to the next element.

How can you remove null values from a list using a list iterator?

• By using the clear() method.

• By using the set() method.

• By using the remove() method.

• By using the add() method.

What method is used to update a null value to zero in a list?

• set()

• add()

• update()

• remove()

In the context of list iterators, what does the set() method do?

• It removes an element from the list.

• It updates the current element.

• It adds a new element to the list.

• It clears all elements from the list.

How can you convert odd numbers to even numbers in a list using a list iterator?

• By dividing each odd number by 2 and using the clear() method.

• By multiplying each odd number by 2 and using the add() method.

• By adding 1 to each odd number and using the set() method.

• By subtracting 1 from each odd number and using the remove() method.