Can you show me a TreeSet implementation example in Java?

Can you show me a TreeSet implementation example in Java?

Sure! A TreeSet in Java is a part of the Java Collections Framework and implements the Set interface. Here's a simple example:

import java.util.TreeSet;

public class TreeSetExample {
    public static void main(String[] args) {
        TreeSet<String> treeSet = new TreeSet<>();
        treeSet.add("Apple");
        treeSet.add("Banana");
        treeSet.add("Cherry");

        System.out.println("TreeSet: " + treeSet);
    }
}

This code creates a TreeSet of strings and adds three fruit names to it.

What are the benefits of using TreeSet over HashSet?

TreeSet maintains a sorted order of elements, which allows for range queries and ordered traversal. In contrast, HashSet does not guarantee any order.

Can I store custom objects in a TreeSet?

Yes, you can store custom objects in a TreeSet, but they must implement the Comparable interface or you need to provide a Comparator when creating the TreeSet.

What happens if I try to add duplicate elements?

TreeSet does not allow duplicate elements. If you try to add a duplicate, it will simply not be added, and the size of the TreeSet will remain unchanged.