java stream add element to list

/**
 * @author lautturi.com
 * Java example: java add new element into list 
 */
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import com.google.common.collect.Lists;

public class Lautturi {

	public static void main(String[] args) {

		List<String> destList = Arrays.asList("hello","lautturi","java","python");	
		List<String> srcList = Arrays.asList("new");

		destList = Stream.concat(destList.stream(), srcList.stream()).parallel()
		            .collect(Collectors.toList());
		System.out.println(destList);
		
	}
}

output:

[hello, lautturi, java, python, new]