Clearing the elements of the Queue

The Queue interface provides a method known as clear(). This method is used to remove all the elements from the current queue.

Example

import java.util.PriorityQueue;
import java.util.Queue;
import java.util.Scanner;

public class ClearingElements {
   public static void main(String args[]) {
         
      //Create priority queue
      Queue <String>  prQueue = new PriorityQueue <String> () ; 
      
      //Adding elements
      prQueue.add("JavaFX");
      prQueue.add("Java");
      prQueue.add("HBase");
      prQueue.add("Flume");
      prQueue.add("Neo4J");
       
      System.out.println("Contents of the queue : " + prQueue) ;       
      prQueue.clear();
      System.out.println("Contents of the queue after deleting specified element: " + prQueue) ;    
   }	
}

Output

Contents of the queue : [Flume, HBase, Java, JavaFX, Neo4J]
Contents of the queue after deleting specified element: []