Java Collections - PriorityQueue.poll() Examples

Class:

java.util.PriorityQueue

Method:

public E poll()

Retrieves and removes the head of this queue, or returns null if this queue is empty.

Examples

package com.logicbig.example.priorityqueue;

import java.util.PriorityQueue;

public class PollExample {

    public static void main(String... args) {
        PriorityQueue<String> pq = new PriorityQueue<>();
        pq.offer("one");
        pq.offer("two");
        System.out.println(pq);
        String element = pq.poll();
        System.out.println(element);
        element = pq.poll();
        System.out.println(element);
        element = pq.poll();
        System.out.println(element);
    }
}

Output

[one, two]
one
two
null

Java Collections - PriorityQueue.poll() Examples

Class:

Method:

Examples

Output

See Also