ArrayList conversion to Array

import java.util.ArrayList;
import java.util.List;

public class ArrayListToArray {

  public static void main(String[] args) {

    List<String> animals = new ArrayList<>();
    animals.add("bird");
    animals.add("dog");
    animals.add("fish");
    animals.add("cat");


    String [] newAnimalsArray = animals.toArray(new String[0]);
    System.out.println(newAnimalsArray.length);

    //Creating a new String array. If you specify a size of 0 for the parameter, Java will create a new array of the proper size for the return value.

    String [] newAnimalsArray = animals.toArray(new String[9]);
    System.out.println(newAnimalsArray.length);

    //If you specify a length that the ArrayList already fits in (i.e. Array longer than its ArrayList) it will be returned. Otherwise, a new one will be created.

  }
}