import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Stream;

public class Stream8 {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("A");
        list.add("B");

        Stream<String> stringStream = list.stream();
        stringStream.forEach(s -> System.out.println(s));
    }
}