TreeSet provides an implementation of the Set interface that uses a tree for storage. Therefore, this interface provides us with a way to navigate through this tree. TreeSet(Comparator): This constructor is used to build an empty TreeSet object in which elements will need an external specification of the sorting order. This constructor constructs an empty tree set that will be sorted in an ascending order according to the natural order of its elements. Constructs a new tree set containing the elements in the specified collection, sorted according to the natural ordering of its elements. Übersicht Collections. This method returns the greatest element in this set strictly less than the given element, or null if there is no such element. Objects in a TreeSet are stored in a sorted and ascending order. TreeSet (Comparator comparator) Constructs a new, empty tree set, sorted according to the specified comparator. Returns a view of the portion of this set whose elements are greater than or equal to fromElement. This method will return last element in TreeSet if TreeSet is not null else it will throw NoSuchElementException.

tree in java collection

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