import java.util.ArrayList;

public class ArrayListWithIntegerGenerics
{
	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<Integer> list = new ArrayList<Integer>();

		list.add(7); // Adds 7 to ArrayList
		list.add(5); // Adds 5 to end of ArrayList
		System.out.println("Element #1:  " + list.get(0));
		System.out.println("Element #2:  " + list.get(1));
		System.out.println("List Size:  " + list.size());

		list.set(0, 3); // Changes first element to 3
		System.out.println("\nElement #1:  " + list.get(0));
		System.out.println("Element #2:  " + list.get(1));
		System.out.println("List Size:  " + list.size());

		list.remove(0); // Removes first element in ArrayList
		System.out.println("\nElement #1:  " + list.get(0));
		System.out.println("List Size:  " + list.size());
		
		list.clear(); // Removes ALL elements from ArrayList
		System.out.println("\nList Size:  " + list.size());
	}
}