It would be simpler if you were to just declare it as a List
– does it have to be an ArrayList?
List<String> places = Arrays.asList("Buenos Aires", "Córdoba", "La Plata");
Or if you have only one element:
List<String> places = Collections.singletonList("Buenos Aires");
This would mean that places
is immutable (trying to change it will cause an UnsupportedOperationException
exception to be thrown).
To make a mutable list that is a concrete ArrayList
you can create an ArrayList
from the immutable list:
ArrayList<String> places = new ArrayList<>(Arrays.asList("Buenos Aires", "Córdoba", "La Plata"));
And import the correct package:
import java.util.Arrays;