Example usage for java.util.stream DoubleStream reduce

Introduction

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

Prototype

OptionalDouble reduce(DoubleBinaryOperator op);

Source Link

Document

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

Usage

From source file:Main.java

public static void main(String[] args) {
    DoubleStream b = DoubleStream.of(1.1, 2.2, 3.3, 4.4, 5.5);

    OptionalDouble d = b.reduce(Double::sum);
    if (d.isPresent()) {
        System.out.println(d.getAsDouble());
    } else {//from w w  w.  j  a  va2 s .c o m
        System.out.println("no value");
    }
}

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