LongStream sum() example

Description

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;
//from w w  w  .  j ava 2s  .  c  om
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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