PriorityQueue size() in Java

size(): This method is available in java.util.PriorityQueue class of Java.

Syntax:

int java.util.PriorityQueue.size()

This method returns the number of elements in this collection.

Note: If this collection contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Parameters: NA

Returns: the number of elements in this collection.

Exceptions: NA

Approach

Java

import java.util.PriorityQueue;

public class PriorityQueuesize {
    public static void main(String[] args) {

        PriorityQueue<Integer> priorityQueue =
                      new PriorityQueue<Integer>();

        priorityQueue.add(12);
        priorityQueue.add(5);
        priorityQueue.add(10);
        priorityQueue.add(2);

        System.out.println(priorityQueue.size());

    }
}

Output:

4