import java.util.*;

public class StrLinkListDemo
{
	public static void main(String[] args)
	{
		Scanner kb = new Scanner(System.in);
		boolean go = true;
		String answer;
		String str;

		StringLinkedList list = new StringLinkedList();

		while(go)
		{
			menu();
			answer = kb.next();
			if(answer.equalsIgnoreCase("I"))
			{
				System.out.print("\nInput a string: ");
				str = kb.next();
				list.addANodeToStart(str);
			}
			else if(answer.equalsIgnoreCase("R"))
			{
				// remove from the top
				System.out.println("Will do remove the top node");
				list.deleteHeadNode();
			}
			else if(answer.equalsIgnoreCase("P"))
			{
				System.out.print("\nThe List is: ");
				list.showList();
				System.out.println("\n");
			}
			else if(answer.equalsIgnoreCase("Q"))
				go = false;
		}

	}

	public static void menu()
	{
		System.out.println("\n\n-----------------\nI	Push an item.");
		System.out.println("P	Print the list.");
		System.out.println("R	Pop an item.");
		System.out.println("Q	Quit.");
		System.out.println("------------------------------------------\n\n");
	}
}