import java.util.Random;
import java.util.Scanner;

public class Main
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);
        Random rng = new Random();
        System.out.print( "Would you like to flip a coin (y/n)? " );
        String again =keyboard.next();

        do {
            String Again = "You flip a coin and it is... ";
            int flip = rng.nextInt(2);
            String coin;

            if (flip == 1)
                coin = "HEADS";
            else
                coin = "TAILS";

            System.out.println("You flip a coin and it is... " + coin);
            System.out.println("Would you like to flip again? (y/n)");
            again = keyboard.next();

        } while (again.equals("y"));

        }
    }