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

/**
 * Lists.java
 * Jeff Ondich, Carleton College, 2014-01-05
 * Modified: Anna Rafferty, Carleton College, 2016-08-24
 * Modified: Jed Yang, Carleton College, 2018-01-08
 *
 * Demonstrates a few operations with Java ArrayList objects and the List
 * interface.  We will discuss the difference between List and ArrayList in a
 * few days.  What you need to know right now is that ArrayList is a kind of
 * List, but not the other way around.
 *
 * This is the Java half of a pair of parallel examples in Python and Java.
 * See lists.py.
 */
public class Lists
{
   public static void main(String[] args)
   {
      // Instantiate an empty list.
      List<String> animalList = new ArrayList<String>();

      // Add some items to the list.
      animalList.add("goat");
      animalList.add("moose");
      animalList.add("emu");
      animalList.add("kudu");
      animalList.add("coatimundi");

      // Insert an item at index 2 (*third* position, after indices 0 and 1).
      animalList.add(2, "gnat");

      // Iterate over the items in the list.
      System.out.println("Animals iterated using a for(:) loop");
      for (String animal : animalList)
      {
         System.out.println(animal);
      }

      System.out.println("");
      System.out.println("Animals iterated using an index");
      for (int index = 0; index < animalList.size(); index++)
      {
         System.out.println(animalList.get(index));
      }
   }
}