PriorityQueue clear() Method in Java

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. Syntax:

Priority_Queue.add(Object element)

Parameters: The parameter element is of the type PriorityQueue and refers to the element to be added to the Queue. Return Value: The function returns True if the element is successfully added to the PriorityQueue . Below programs illustrate the Java.util.PriorityQueue.add() method: Program 1: Adding String elements into the Queue.

Java

// 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);
    }
}

Output:

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

Program 2: Adding Integer elements into the Queue.

Java

// 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);
    }
}

Output:

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

PriorityQueue clear() Method in Java

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