Java 8 Streams - LongStream.spliterator Examples

package com.logicbig.example.longstream;

import java.util.Spliterator;
import java.util.stream.LongStream;
import java.util.stream.StreamSupport;

public class SpliteratorExample {

    public static void main(String... args) {
        Spliterator.OfLong s = LongStream.range(1, 10)
                                         .spliterator();
        Spliterator.OfLong s2 = s.trySplit();

        LongStream stream1 = StreamSupport.longStream(s, false);
        LongStream stream2 = StreamSupport.longStream(s2, false);

        System.out.println(" -- first half --");
        long sumOfTwice = stream1.peek(System.out::println)
                                 .map(lg -> Math.multiplyExact(lg, 2))
                                 .sum();

        System.out.println(" -- second half --");
        long sumOfSquared = stream2.peek(System.out::println)
                                   .map(lg -> Math.multiplyExact(lg, lg))
                                   .sum();

        long totalSum = Math.addExact(sumOfTwice, sumOfSquared);
        System.out.printf("--total sum --%n%s%n", totalSum);
    }
}

package com.logicbig.example.longstream;

import java.util.Spliterator;
import java.util.stream.LongStream;
import java.util.stream.StreamSupport;

public class SpliteratorExample2 {

    public static void main(String... args) {
        Spliterator.OfLong s = LongStream.range(1, 10)
                                         .spliterator();
        Spliterator.OfLong s2 = s.trySplit();

        LongStream stream1 = StreamSupport.longStream(s, true);
        LongStream stream2 = StreamSupport.longStream(s2, true);

        System.out.println(" -- first half --");
        long sumOfTwice = stream1.peek(System.out::println)
                                 .map(lg -> Math.multiplyExact(lg, 2))
                                 .sum();

        System.out.println(" -- second half --");
        long sumOfSquared = stream2.peek(System.out::println)
                                   .map(lg -> Math.multiplyExact(lg, lg))
                                   .sum();

        long totalSum = Math.addExact(sumOfTwice, sumOfSquared);
        System.out.printf("--total sum --%n%s%n", totalSum);
    }
}