Java Programs

Java Practice

Java program to print HashSet elements using parallelStream() method

Given a HashSet, we have to print the elements using parallelStream() method.
Submitted by Nidhi, on May 11, 2022

Problem statement

In this program, we will create a set using the HashSet collection to store integer elements. Then we will print set elements using the parallelStream() method.

Source Code

The source code to print HashSet elements using the parallelStream() method is given below. The given program is compiled and executed successfully.

// Java program to get a parallel stream 
// of a HashSet

import java.util.*;

class Main {
  public static void main(String[] args) {
    HashSet < Integer > nums = new HashSet();

    nums.add(1);
    nums.add(2);
    nums.add(3);
    nums.add(4);
    nums.add(5);
    nums.add(6);

    System.out.println("Set elements: ");
    nums.parallelStream().forEach(System.out::println);
  }
}

Output

Set elements: 
4
5
6
1
2
3

Explanation

In the above program, we imported the "java.util.*" package to use the HashSet collection. Here, we created a public class Main that contains a main() method.

The main() method is the entry point for the program. Here, we created a set to store integer data elements using HashSet collection. Then we printed HashSet elements using the parallelStream() method.