Example usage for java.util.stream IntStream reduce

Introduction

In this page you can find the example usage for java.util.stream IntStream reduce.

Prototype

OptionalInt reduce(IntBinaryOperator op);

Source Link

Document

Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an OptionalInt describing the reduced value, if any.

Usage

From source file:Main.java

public static void main(String[] args) {
    IntStream i = IntStream.of(6, 5, 7, 1, 2, 3, 3);
    OptionalInt v = i.reduce(Integer::sum);
    if (v.isPresent()) {
        System.out.println(v.getAsInt());
    } else {/*from w w w  . ja  v a  2 s .  c  o m*/
        System.out.println(v);
    }

}

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