import java.io.*;
import java.util.*;

public class MadLibs {

   public static void main(String[] args) throws FileNotFoundException{
      System.out.println("Welcome to the game of Mad Libs.");
      System.out.println("I will ask you to provide various words");
      System.out.println("and phrases to fill in a story.");
      System.out.println("The result will be written to an output file.");
      }

      public static void menu() throws FileNotFoundException{
         Scanner console = new Scanner(System.in);
         System.out.print("(C)reate mad-lib, (V)iew mad-lib, (Q)uit mad-lib");
         String choice = console.nextLine();

         if (choice.equalsIgnoreCase("c")){
         //Create a Madlib
            create(console);
         }
         else if (choice.equalsIgnoreCase("v")){
         //view a madlib
            view(console);
         }
         else if (choice.equalsIgnoreCase("q")){
         //quit
         }
         else{
            menu();
         }
      }
    public static void create(Scanner console) throws FileNotFoundException{
         File input = getFile(console);
         System.out.print("Output file name: ");
         PrintStream out = new PrintStream(new File(console.nextLine()));
         System.out.println();
         Scanner fileScanner = new Scanner(input);
         while (fileScanner.hasNextLine()){
            Scanner line = new Scanner(fileScanner.nextLine());
            while (line.hasNext()) {
   // Either prompt or write it to the output
               String token = line.next();
   //System.out.print(token);
               if (token.startsWith("<") && token.endsWith(">")) {
                  System.out.print("Please type a");
                  token = token.substring(1, token.length()-1).replace("-", " ");
                  if (isVowel(token.charAt(0))){
                     System.out.print("n");
                  }
                  System.out.print(" " + token + ": ");
                  token = console.nextLine();
                  }

                  out.print(token + " ");

               }

               menu();
            }

            if (c == 'a' || c== 'A' || c== 'e' || c== 'E' || c== 'i' || c== 'I' || c== 'o' || c== 'O' || c== 'u' || c== 'U') {
              System.out.print("n");
              }
    }

    public static void view(Scanner console) throws FileNotFoundException{
      File inputFile = getFile(console);
      System.out.println();

      Scanner file = new Scanner(inputFile);
      while(file.hasNextLine()){
         System.out.println(file.nextLine());
      }

      menu();
    }


    public static File getFile(Scanner console){
      System.out.print("Input file name: ");
      String fileName = console.nextLine();
      File inputFile = new File(fileName);
      while (!inputFile.exists()){
         System.out.print("File not found. Try again: ");
         inputFile = new File(console.nextLine());
      }
      return inputFile;
   }
  }          `import java.io.*;