투덜투덜 불평하기에 시간은 짧고 아깝다. RxJava - just()- create()- fromArray()- fromIterator()- fromCallable() Observable.range(1,9).map(row -> num + " * " + row + " = " + dan * row);Observable source = Observable.just(dan).flatMap(gugudan);source.subscribe(System.out::println); Reactive Extention: http://reactivex.io/
