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TreeSet: Creation and Insertion

Explore how to create TreeSet objects in Java using different constructors and insert elements singly or in bulk. Understand TreeSet sorting, no duplicates, and the role of Comparator to manage element order.

Java TreeSet class implements the Set interface that uses a tree for storage. It inherits the AbstractSet class and implements the NavigableSet interface.

Some of the features of TreeSet are:

  1. TreeSet does not allow duplicate elements.
  2. TreeSet class doesn’t allow null elements.
  3. Since elements are stored in a tree, the access and retrieval times are quite fast in a TreeSet.
  4. The elements are stored in ascending order in a TreeSet.

Difference between a HashSet and TreeSet

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