PriorityQueue spliterator() method in Java (original) (raw)

Last Updated : 10 Dec, 2018

The spliterator() method of PriorityQueue returns a Spliterator the same elements as PriorityQueue.The returned Spliterator is late-binding and fail-fast Spliterator. A late-binding Spliterator binds to the source of elements means PriorityQueue at the point of first traversal, first split, or first query for estimated size, rather than at the time the Spliterator is created. It can be used with Streams in Java 8. Also it can traverse elements individually and in bulk too. Spliterator is better way to traverse over element because it provides more control on elements.

Syntax:

public Spliterator spliterator()

Returns: This method returns a Spliterator over the elements in PriorityQueue.

Below programs illustrate spliterator() method of PriorityQueue:

Example 1: To demonstrate spliterator() method on PriorityQueue.

import java.util.*;

public class GFG {

`` public static void main(String[] args)

`` {

`` PriorityQueue<String> queue = new PriorityQueue<String>();

`` queue.add( "Kolkata" );

`` queue.add( "Patna" );

`` queue.add( "Delhi" );

`` queue.add( "Jammu" );

`` Spliterator<String> spt = queue.spliterator();

`` System.out.println( "list of Strings:" );

`` spt.forEachRemaining((n) -> System.out.println(n));

`` }

}

Output:

list of Strings: Delhi Jammu Kolkata Patna

Example 2: To demonstrate spliterator() method on PriorityQueue which contains set of Students Names.

import java.util.*;

public class GFG {

`` public static void main(String[] args)

`` {

`` PriorityQueue<String> queue = new PriorityQueue<String>();

`` queue.add( "Aman" );

`` queue.add( "Amar" );

`` queue.add( "Sanjeet" );

`` queue.add( "Josh" );

`` queue.add( "Ron" );

`` queue.add( "Kevin" );

`` Spliterator<String> spt = queue.spliterator();

`` System.out.println( "list of String Object:" );

`` spt.forEachRemaining((n) -> print(n));

`` }

`` public static void print(String s)

`` {

`` System.out.println( "Student Name: " + s);

`` }

}

Output:

list of String Object: Student Name: Aman Student Name: Amar Student Name: Kevin Student Name: Josh Student Name: Ron Student Name: Sanjeet

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/PriorityQueue.html#spliterator–