class ZipAndCombineLatest {

​

    public static void main(String[] args) throws InterruptedException {

        Observable<Long> src1 = Observable.interval(200, TimeUnit.MILLISECONDS).take(10);

​

        Observable<Long> src2 = Observable.interval(1, TimeUnit.SECONDS).take(10);

        Observable.combineLatest(src1, src2, (e1, e2) -> "Source 1 : "+e1+" Source 2: " + e2)

        .subscribe(System.out::println);

        Thread.sleep(20000);

​

​

    }

​

}

​