package Streams;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;
public class FlatMapExample {
public static void main(String[] args) {
List> listOfLists = Arrays.asList(
Arrays.asList("a", "b"),
Arrays.asList("c", "d"),
Arrays.asList("e", "f")
);
listOfLists.stream()
.flatMap(Collection::stream)
.map(String::toUpperCase)
.forEach(System.out::println);
}
}