Java Stream How to - Sum a LongStream in parallel

Question

We would like to know how to sum a LongStream in parallel.

Answer

import java.util.stream.LongStream;

public class Main {
  public static void main(String...args){
    long l = LongStream.rangeClosed(1, 200).parallel().reduce(Long::sum).getAsLong();
    System.out.println(l);
  }
}

The code above generates the following result.