Add elements in ArrayList in more readable way

When you know the elements prior to instantiating:

List<Integer> myList = new ArrayList<>(Arrays.asList(1, 2, 3, 4));

or if you want to add them to an existing list:

List<Integer> myList = new ArrayList<>();
// do stuff
myList.addAll(Arrays.asList(1, 2, 3, 4));

To make it more readable, you can

import static java.util.Arrays.asList;

and simply use

List<Integer> myList = new ArrayList<>(asList(1, 2, 3, 4));

or

List<Integer> myList = new ArrayList<>();
// do stuff
myList.addAll(asList(1, 2, 3, 4));

---

In case you know that you never ever want to add more elements to the list, you can simply write

List<Integer> myList = Arrays.asList(1, 2, 3, 4);

or with the static import:

List<Integer> myList = asList(1, 2, 3, 4);

Guava way(though List is immutable):

ImmutableList<Integer> myList = ImmutableList.<Integer>builder()
                             .add(1)
                             .add(2)
                             .add(3)
                             .build();

or this way:

List <Integer> myList = Lists.newArrayList(1,2,3);

or

List <Integer> myList = Ints.asList(1,2,3);

If you find this readable, here's one more way

List<Integer> list = new ArrayList<Integer>() {{
    add(1);add(2);add(3);
}};