Java Streams - LongStream sum() example

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LongStream sum() returns the sum of elements in this stream.

Syntax

sum has the following syntax.

long sum()

Example

The following example shows how to use sum.

import java.util.stream.LongStream;

public class Main {
  public static void main(String[] args) {
    LongStream b = LongStream.of(1L, 2L, 3L);
    long s = b.sum();
    System.out.println(s);
  }
}

The code above generates the following result.

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