import java.util.*;

class ArrayListDemo {
	
	public static void main(String args[]) {
		
		//Create an array list.
		ArrayList<String> al = new ArrayList<String>();
		System.out.println("Initial size of al: " + al.size());
		
		//Add elements to the array list.
		al.add("C");
		al.add("A");
		al.add("E");
		al.add("B");
		al.add("D");
		al.add("F");
		al.add(1, "A2");
		
		System.out.println("Size of al after additions: " + al.size());
		
		//Display the array list.
		System.out.println("Contents of al: " + al);
		
		//Remove elements from the array list.
		al.remove("F");
		al.remove(2);
		System.out.println("Size of al after deletions: " +
		al.size());
		System.out.println("Contents of al: " + al);
	}
}