Java Programming for Complete Beginners - Java 16 - Step 06 - List Interface - Methods to Add, Remove, and Change Elemen

This video tutorial explores the differences between ArrayList, LinkedList, and Vector in Java. It covers various operations such as adding, modifying, and deleting elements in these lists. The tutorial emphasizes that these operations are consistent across different list implementations. It also highlights the ability to add elements at specific indices, handle duplicates, and merge lists. The video concludes with exercises to reinforce learning, encouraging viewers to practice with different list types and merge operations.

What is a key difference between ArrayList and Vector?

• ArrayList is synchronized, Vector is not.

• Both are synchronized.

• Vector is synchronized, ArrayList is not.

• Neither are synchronized.

How can you add an element to a specific position in an ArrayList?

• Using the add() method with the index and element.

• Using the insert() method with the index and element.

• Using the append() method with the index and element.

• Using the put() method with the index and element.

What happens if you add a duplicate element to an ArrayList?

• The duplicate element is ignored.

• An error is thrown.

• The duplicate element is added.

• The list is cleared.

How can you change an element at a specific index in an ArrayList?

• Using the update() method.

• Using the set() method.

• Using the change() method.

• Using the modify() method.

What method would you use to remove an element by its index in an ArrayList?

• erase()

• remove()

• removeAt()

• delete()

If you try to remove an element that is not in the ArrayList, what is returned?

• false

• An exception is thrown

• null

• true

What is the result of using the remove() method with an element that appears multiple times in an ArrayList?

• All instances of the element are removed.

• The first instance of the element is removed.

• The last instance of the element is removed.

• No instances are removed.