zip.java

package com.company;

import java.util.Arrays;
import java.util.Iterator;
import java.util.stream.IntStream;
import java.util.stream.Stream;

public class Main {
    private static int consume(int a, int b) {
        return a + b;
    }
    public static void main(String[] args) {

        Stream<Integer> xs = Arrays.stream(new Integer[] {1, 2, 3, 4, 5});
        Stream<Integer> ys = Arrays.stream(new Integer[] {9, 8, 7, 6, 5});

        Iterator<Integer> xi = xs.iterator();
        Iterator<Integer> yi = ys.iterator();

        IntStream
            .iterate(0, n -> n + 1)
            .filter(i -> xi.hasNext() && yi.hasNext())
            .map(n -> consume(xi.next(), yi.next()))
            .forEach(System.out::println);
    }
}