What are some examples of using TreeSet in Java?

Can you give me some examples of using TreeSet in Java?

Sure! A TreeSet is a part of the Java Collections Framework and implements the Set interface. It stores elements in a sorted order. For example, you can create a TreeSet to store a list of names in alphabetical order.

How do I add elements to a TreeSet?

You can add elements using the add() method. For instance: TreeSet<String> names = new TreeSet<>(); names.add("Alice"); names.add("Bob"); This will automatically sort the names.

What happens if I try to add a duplicate element?

If you try to add a duplicate element, the TreeSet will not add it and will simply ignore the operation. For example, adding "Alice" again won't change the set.

Can I iterate over the elements in a TreeSet?

Yes, you can iterate over a TreeSet using a for-each loop or an iterator. For example: for (String name : names) { System.out.println(name); } will print the names in sorted order.