How do you put two lists together in Java?

Is there a way to combine the two lists as short as possible with JDK without touching the existing list and without using other libraries?

List<String> newList = new ArrayList<String>();
newList.addAll(listOne);
newList.addAll(listTwo);

I wish it was simpler than this sauce.

2022-09-21 23:01

1 Answers

The shortest code that I can squeeze out of my head is

List<String> newList = new ArrayList<String>(listOne); newList.addAll(listTwo);

And if you use another library, use the Apache Commons library and ListUtils.union(list1,list2); You could do this.

2022-09-21 23:01

Popular Tags

python x 4647

android x 1593

java x 1494

c x 927

c++ x 878

php x 692

html x 656