Appending Item to ArrayList in Java

We can add elements to the end of an ArrayList using the .add() method.

.add() takes one parameter and "pushes" it onto the end of the ArrayList:

List<Integer> arr1 = new ArrayList<>(List.of(1, 2, 3));
arr1.add(4);

// arr1 is now {1, 2, 3, 4}

Assignment
Follow the Coding Tutorial and let's play with some arrays.

Hint
Look at the examples above if you get stuck.