Core Java Programming Course- Linked Hash Set

The video tutorial explains the concept of a linked hash set, an ordered version of a hash set that maintains insertion order. It covers how to create and initialize a linked hash set, add elements, and highlights the differences from a regular hash set, such as maintaining a doubly linked list internally. The tutorial also discusses methods like add, remove, and clear, and operations like union and intersection. The key takeaway is that linked hash sets maintain insertion order, unlike regular hash sets.

What is the primary difference between a HashSet and a LinkedHashSet?

• LinkedHashSet maintains insertion order.

• LinkedHashSet allows duplicates.

• LinkedHashSet allows positional access.

• LinkedHashSet is faster than HashSet.

Which method is used to add elements to a LinkedHashSet?

• append()

• add()

• put()

• insert()

What happens when you try to add a duplicate element to a LinkedHashSet?

• It throws an error.

• It ignores the duplicate element.

• It adds the duplicate element.

• It replaces the existing element.

Which of the following operations can be performed on a LinkedHashSet?

• Duplicate insertion

• Access by position

• Sorting by index

• Union and intersection

What internal structure does a LinkedHashSet use to maintain order?

• Hash table

• Array

• Doubly linked list

• Binary tree