What are the common operations I can perform on a HashSet?

What are the common operations I can perform on a HashSet?

You can perform several operations on a HashSet, such as adding elements, removing elements, checking for existence, and iterating through the set.

How do I add an element to a HashSet?

To add an element, you can use the add() method. For example, hashSet.add(element); will add the specified element.

What happens if I try to add a duplicate element?

If you try to add a duplicate element, the HashSet will not change, as it only stores unique elements.

Can I check if an element exists in the HashSet?

Yes, you can use the contains() method to check for the existence of an element. For example, hashSet.contains(element); returns true if the element is present.

How do I remove an element from a HashSet?

You can remove an element using the remove() method. For example, hashSet.remove(element); will remove the specified element if it exists.