Java8: Stream merge two lists [duplicate]

Question

I have two lists

List1 - (1, 2, 3)
List2 - (4, 5, 6,7, 8)

Want to merge both the list as (1, 4, 2, 5, 3, 6, 7, 8) using java streams

First element from List1, List2 and, Second element from list1, list2 ...so on..if any extra elements remain then place at the end.

Answer 1

Stream.concat(list1.stream(), list2.stream())
   .collect(Collectors.toList())