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NavigableSet pollLast() method in Java

NavigableSet pollLast() method in Java

Last Updated : 11 Jul, 2025

The pollLast() method of

NavigableSet interface in Java

is used to retrieve and remove the last (highest) element, or returns null if this set is empty.

Syntax

:

E pollLast()

Where, E is the type of elements maintained by this Set container.

Parameters

: This function does not accepts any parameter.

Return Value

: It returns the last (highest) element, or returns null if this set is empty. Below programs illustrate the pollLast() method in Java:

Program 1

: NavigableSet with integer elements.

Java
// A Java program to demonstrate
// pollLast() method of NavigableSet

import java.util.NavigableSet;
import java.util.TreeSet;

public class GFG {
    public static void main(String[] args)
    {
        NavigableSet<Integer> ns = new TreeSet<>();
        ns.add(0);
        ns.add(1);
        ns.add(2);
        ns.add(3);
        ns.add(4);
        ns.add(5);
        ns.add(6);

        System.out.println("Greatest(last) element removed is : "
                                               + ns.pollLast());
    }
}
Output:
Greatest(last) element removed is : 6
Program 2:

NavigableSet with string elements.

Java
// A Java program to demonstrate
// pollLast() method of NavigableSet

import java.util.NavigableSet;
import java.util.TreeSet;

public class GFG {
    public static void main(String[] args)
    {
        NavigableSet<String> ns = new TreeSet<>();
        ns.add("A");
        ns.add("B");
        ns.add("C");
        ns.add("D");
        ns.add("E");
        ns.add("F");
        ns.add("G");

        System.out.println("Greatest(last) element removed is : " 
                                                + ns.pollLast());
    }
}
Output:
Greatest(last) element removed is : G
Reference

:

https://docs.oracle.com/javase/10/docs/api/java/util/NavigableSet.html#pollLast(E)

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