import java.util.ArrayList;

public class ArrayListWithStringGenerics
{
	public static void main(String[] args)
	{
		// Generics allows an ArrayList to be created by specifying the type
		//  of element that will be stored in the list; it does limit the
		//  ArrayList to contain only one type of element, but a feature
		//  called autoboxing eliminates the need for the elements to be
		//  cast into their specific type when they are retrieved from the
		//  ArrayList, since the ArrayList will already know what type of
		//  elements it is holding
		ArrayList<String> list = new ArrayList<String>();

		list.add("cat"); // Adds "cat" to ArrayList
		list.add("dog"); // Adds "dog" to end of ArrayList
		list.add("zebra"); // Adds "zebra" to end of ArrayList

		System.out.println("Element #1:  " + list.get(0));
		System.out.println("Element #2:  " + list.get(1));

		list.set(0, "fish"); // Changes first element to "fish"

		System.out.println("Element #1:  " + list.get(0));
		System.out.println("Element #2:  " + list.get(1));

		list.add(1, "giraffe"); // Adds "giraffe" at spot #2
		list.add("elephant"); // Adds "elephant" to end of ArrayList
		list.add(1, "dog"); // Adds "dog" at spot #2

		// Displays the list contents with a 'for-each' loop
		for (String animal : list)
			System.out.print(animal + "     ");
		System.out.println();

		list.remove("dog"); // Removes first occurrence of "dog"
		list.remove(3); // Removes element at spot #4

		// Displays the list contents with a 'for' loop
		for (int spot = 0; spot < list.size(); spot++)
			System.out.print(list.get(spot) + "     ");
	}
}