Collection.parallelStream() in Java

Collection.parallelStream(): This method is available in java.util.ArrayList class of Java.

Syntax:

Stream<E> java.util.Collection.parallelStream()

This method returns a possibly parallel Stream with this collection as its source.

Parameters: NA

Returns: a possibly parallel Stream over the elements in this collection.

Exceptions: NA

Approach

Java

import java.util.ArrayList;

public class ArrayListparallelStream {
    public static void main(String[] args) {
        ArrayList<Integer> arr = new ArrayList<>();
        arr.add(1);
        arr.add(2);
        arr.add(3);
        System.out.println(arr.parallelStream());

    }
}

Output:

java.util.stream.ReferencePipeline$Head@606d8acf