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PriorityQueue add() Method in Java

Last Updated : 09 Aug, 2019

The Java.util.PriorityQueue.add() method in Java is used to add a specific element into a PriorityQueue. This method internally just calls the Java.util.PriorityQueue.offer() method with the value passed to it. So, it exactly works like offer() method.

Priority_Queue.add(Object element)

The parameter

is of the type PriorityQueue and refers to the element to be added to the Queue.

The function returns True if the element is successfully added to the PriorityQueue . Below programs illustrate the Java.util.PriorityQueue.add() method:

Adding String elements into the Queue.

// Java code to illustrate add()
import java.util.PriorityQueue;

public class PriorityQueueDemo {
    public static void main(String args[])
    {
        // Creating an empty PriorityQueue
        PriorityQueue<String> queue = new PriorityQueue<String>();

        // Use add() method to add elements into the Queue
        queue.add("Welcome");
        queue.add("To");
        queue.add("Geeks");
        queue.add("4");
        queue.add("Geeks");

        // Displaying the PriorityQueue
        System.out.println("PriorityQueue: " + queue);
    }
}

PriorityQueue: [4, Geeks, To, Welcome, Geeks]

Adding Integer elements into the Queue.

// Java code to illustrate add()
import java.util.*;

public class PriorityQueueDemo {
    public static void main(String args[])
    {
        // Creating an empty PriorityQueue
        PriorityQueue<Integer> queue = new PriorityQueue<Integer>();

        // Use add() method to add elements into the Queue
        queue.add(10);
        queue.add(15);
        queue.add(30);
        queue.add(20);
        queue.add(5);

        // Displaying the PriorityQueue
        System.out.println("PriorityQueue: " + queue);
    }
}

PriorityQueue: [5, 10, 30, 20, 15]

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