What are the differences between Set and List in Java?

What are the differences between Set and List in Java?

In Java, a Set is a collection that does not allow duplicate elements, while a List allows duplicates and maintains the order of elements.

Can you give me examples of when to use each?

Use a List when you need to maintain the order of elements or allow duplicates, like in a shopping list. Use a Set when you want to ensure uniqueness, like in a collection of user IDs.

What are the performance differences between them?

Sets generally have faster performance for operations like add, remove, and contains, especially with large datasets, while Lists are better for indexed access.

Are there different types of Sets and Lists in Java?

Yes, Java has different implementations like HashSet, TreeSet for Sets, and ArrayList, LinkedList for Lists, each with unique characteristics.