Reduce to sum
Description
The following code shows how to reduce to sum.
Example
/*from w w w . jav a 2s.c om*/
import java.util.Arrays;
import java.util.List;
public class Main {
public static void main(String...args){
List<Integer> numbers = Arrays.asList(3,4,5,1,2);
int sum = numbers.stream().reduce(0, (a, b) -> a + b);
System.out.println(sum);
}
}
The code above generates the following result.
