Using Priority Queue in Java

In Java, a Priority Queue is designed to ensure that each element inside has a priority and that the elements are served based on their priorities. The head of the priority queue is the most minor element concerning the specified ordering. If multiple elements have the lowest value, the head is one of those elements. Elements in the PriorityQueue are ordered according to their natural order or based on a specified Comparator at construction time. Use the `add()` method to add an element to a Priority Queue. The `poll()` method retrieves and removes the highest priority element. If you want to see the element with the highest priority without taking it out of the queue, you'd use the `peek()` method. In this Java Priority Queue Example, we created a PriorityQueue object, looked through the last added element, and removed some of them. Click Execute to run the Java Priority Queue Example online and see the result.
Using Priority Queue in Java Execute
 import java.util.PriorityQueue;

public class PriorityQueueDemo {
    public static void main(String[] args) {
        PriorityQueue<Integer> priorityQueue = new PriorityQueue<>();


        System.out.println("Top element: " + priorityQueue.peek());

        System.out.println("Polled element: " + priorityQueue.poll());
      	System.out.println("Polled element: " + priorityQueue.poll());
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