TreeSet class is the class that implements NavigableSet interface and NavaigableSet extends SortedSet which extends Set. TreeSet contains unique elements. Another important and powerful property is ...
treeset will never allow null cuz it need to compare the content. In Java, a TreeSet is primarily used when you need to store a collection of unique elements that must be kept in a sorted order.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results