Java8 # Concat String

 import java.util.ArrayList;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;

public class Java8Concat {
    public static void main(String[] args) {
        List<String> line1 = Arrays.asList("a","b","c");
        List<String> line2 = Arrays.asList("d","e","f");

        Stream<String> concatstream = Stream.concat(line1.stream(),line2.stream());
        concatstream.forEach(System.out::println);

    }
}