import java.util.ArrayList;

//Suppress Eclipse compiler warnings about unused local variables
@SuppressWarnings("unused")
public class ArrayListWithoutGenerics
{
	public static void main(String[] args)
	{
		// By not using generics, an ArrayList can be created without defining
		//  what type of elements it can contain; this allows elements of
		//  different types to be put into one ArrayList, but it also means
		//  that the elements must be cast into their specific types when they
		//  are retrieved from the ArrayList, since the types of elements being
		//  stored in the ArrayList are not known to the ArrayList itself
		ArrayList stuff = new ArrayList();

		stuff.add("Heather");
		stuff.add(37);
		stuff.add(82.5);
		stuff.add(false);

		// Displayed outputs do not need to be cast
		System.out.println(stuff.get(0));
		System.out.println(stuff.get(1));
		System.out.println(stuff.get(2));
		System.out.println(stuff.get(3));

		// Outputs into variables must be cast to avoid syntax errors
		String name = (String) stuff.get(0);
		Integer num1 = (Integer) stuff.get(1);
		Double num2 = (Double) stuff.get(2);
		Boolean letter = (Boolean) stuff.get(3);
	}
}