ArrayList

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

public class ArrayLists {

	public static void main(String[] args) {
		// Basic 2D array
		String[] games = { "Risk", "Monopoly", "Cards Against Humanity" };
		// Arrays, like strings, are based with index 0
		System.out.println(games[2]);

		/// ArrayList of size 5 but index 0-4
		ArrayList<String> fruits = new ArrayList<String>(5);
		fruits.add("Apples");
		fruits.add("Oranges");
		fruits.add("Peaches");
		fruits.add("Kiwis");
		// Index will be One, everything else will shift
		fruits.add(1, "Bananas");

		// Size is 5, adjusts to filled index not capacity
		for (int i = 0; i < fruits.size(); i++) {
			System.out.println(fruits.get(i));
		}
		// Not add, but change value at index
		fruits.set(1, "grapes");
		// Cannot access out of size
		// fruits.set(6, "fries");

		// ArrayList Methods
		// Default Capacity of 10
		ArrayList<String> moreFruits = new ArrayList<String>();
		moreFruits.add("apple");
		moreFruits.add("peach");
		moreFruits.add("banana");
		moreFruits.add("kiwi");
		System.out.println(moreFruits);
		
		//Adding to fruits
		moreFruits.add(1,"grapes");
		System.out.println(moreFruits);
		
		//Inclusive 1, exclusive 4
		System.out.println(moreFruits.subList(1, 4));
		
		//Index methods apply
		System.out.println(moreFruits);
		int index=moreFruits.indexOf("apple");
		System.out.println(index);
		
		//Copy the Method
		ArrayList <String> newList = new ArrayList <String> (moreFruits);
		System.out.println(newList); 
		
		//Array list are objects, not primitives. This method takes advantages of autoboxing
		List<Integer> intList=new ArrayList <Integer> ();
		for (int number = 1 ; number <= 20 ; number++)
		{
			intList.add(number);
		}
		System.out.println(intList);
		int total=0;
		for (int number: intList)
		{
			total+=number;
		}
		System.out.println(total); 
		
	}
}