TreeSet pollLast() method in Java with Example Last Updated : 24 Dec, 2018 Comments Improve Suggest changes Like Article Like Report The pollLast() method of Java.util.concurrent.TreeSet is an in-built function in Java which returns retrieves and removes the last (highest) element, or returns null if this set is empty. Syntax: public E pollLast() Return Value: The function returns retrieves and removes the last (highest) element, or returns null if this set is empty. Below programs illustrate the TreeSet.pollLast() method: Program 1: Java // Java program to demonstrate pollLast() // method of TreeSet import java.util.*; class TreeSetpollLastExample1 { public static void main(String[] args) { // Creating a set object TreeSet<Integer> set = new TreeSet<Integer>(); // Adding elements to this set for (int i = 10; i <= 50; i += 10) set.add(i); // Printing the content of the set System.out.println("Contents of the set: " + set); // Retrieving and removing Last element of the set System.out.println("The Last element of the set: " + set.pollLast()); // Printing the content of the set after pollLast() System.out.println("Contents of the set after pollLast: " + set); } } Output: Contents of the set: [10, 20, 30, 40, 50] The Last element of the set: 50 Contents of the set after pollLast: [10, 20, 30, 40] Program 2: Java // Java program to demonstrate pollLast() // method of TreeSet import java.util.*; class TreeSetpollLastExample2 { public static void main(String[] args) { // Creating a set object TreeSet<Integer> set = new TreeSet<Integer>(); // Printing the content of the set System.out.println("Contents of the set: " + set); // Retrieving and removing Last element of the set System.out.println("The Last element of the set: " + set.pollLast()); } } Output: Contents of the set: [] The Last element of the set: null Comment More infoAdvertise with us Next Article TreeSet pollLast() method in Java with Example V VatsalChoudhary Follow Improve Article Tags : Java Practice Tags : Java Similar Reads TreeSet in Java TreeSet is one of the most important implementations of the SortedSet interface in Java that uses a Tree(red - black tree) for storage. 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