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Java 8 Streams - IntStream.sum Examples

Java 8 Streams Java Java API

Interface:

java.util.stream.IntStream

Method:

int sum()

Returns the sum of elements in this stream. This is a special case of a reduction

Examples

package com.logicbig.example.intstream;

import java.util.stream.IntStream;

public class SumExample5 {

    public static void main(String... args) {
        int sum = IntStream.range(1, 5)
                           .filter(i -> i % 2 == 0)
                           .sum();
        System.out.println(sum);
    }
}

Output

See Also