PriorityQueue in java

/**
 * @author lautturi.com 
 * Java example: java PriorityQueue/ Priority Queue example in java
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args) {
		
		PriorityQueue<String> pqueue = new PriorityQueue<String>();
		pqueue.add("java");
		pqueue.add("lautturi");
		pqueue.add("python");
		pqueue.add("lautTur1");
		
		// print the Queue
        System.out.println(pqueue); 
        
        // insert new element to the queue
        pqueue.offer("js");
        System.out.println(pqueue); 
        
        // add new value to the Queue
        pqueue.add("php");
        System.out.println(pqueue); 

		// remove and return front value from Queue:
        String next = pqueue.remove();
		System.out.println("next:" + next);

		// return front value without removing from Queue:
		String peek = pqueue.peek();
		System.out.println("peek:" + peek);

		System.out.println("The queue:");
		// print the Queue
		System.out.println(pqueue); 

	}
}

output:

[java, lautTur1, python, lautturi]
[java, js, python, lautturi, lautTur1]
[java, js, php, lautturi, lautTur1, python]
next:java
peek:js
The queue:
[js, lautTur1, php, lautturi, python]