Java 8 Streams - Stream.mapToDouble Examples

package com.logicbig.example.stream;

import java.util.stream.DoubleStream;
import java.util.stream.Stream;

public class MapToDoubleExample {

    public static void main(String... args) {
        String[] s = {"1.1", "2.4", "3.7", "4.33"};
        Stream<String> stringStream = Stream.of(s);
        DoubleStream doubleStream = stringStream.mapToDouble(Double::parseDouble);
        double sum = doubleStream.peek(System.out::println)
                                 .sum();
        System.out.println("sum: " + sum);
    }
}