Last Updated: December 6, 2025
TreeSets are a fascinating component of the Java Collections Framework that provide more than just a way to store unique elements. If you've worked with a LinkedHashSet, you already know that it maintains insertion order, but TreeSet takes things a bit further with ordering and sorting.
In this chapter, we’ll delve into the intricacies of TreeSet, exploring its structure, behavior, and real-world applications, along with some practical examples to solidify your understanding.