MeasurementCode

public static void main(String...args) {

        System.out.println("Array " + sumValues( () -> arrayStream()) + " sec");
        System.out.println("ArrayList " + sumValues(() -> arrayListStream()) + " sec");
        System.out.println("set " + sumValues(() -> setStream()) + " sec");
        System.out.println("linkedlist " + sumValues(() -> linkedListStream()) + " sec");
    }

    public static long sumValues(Supplier<Stream<Integer>> numberSupplier) {
        int result = 0;
        long fastest = Integer.MAX_VALUE;
        for(int cnt=0;cnt<10;cnt++) {
            long start = System.nanoTime();

            result=numberSupplier.get().parallel().reduce(Integer::sum).get();

            long total = System.nanoTime() - start;
            fastest = Math.min(fastest, total / 1_000_000);
          
        }

        return fastest;
    }