import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;
import java.io.File;
import java.io.PrintWriter;

public class assignment44

{
	public static void main(String[] args)
	throws java.io.FileNotFoundException
	{
		String fileName;
		if(args.length<1)
			System.out.println("Need a file");
		else
		{	if(args.length == 1)
				fileName = "assign4out.txt";
			else
				fileName = args[1];


		ArrayList<String> arrayList = new ArrayList<String>();

		Scanner input = new Scanner (new File(args[0]));
		PrintWriter output =  new PrintWriter(fileName);

		String last;

		while(input.hasNextLine());
		{
			last = input.nextLine();
			arrayList.add(last);
		}
	
		input.close();
		Collections.sort(arrayList);
		output.println("Sorted by last name: \n" + arrayList);
		output.close();

		}
		System.out.println("Done, Bye bye");

	}
}