import java.util.*; //scanner and ArrayList

public class ALBook {
   public static void main(String[] args){
      Scanner sc = new Scanner(System.in);
   //variables declared at the top
      Book book=null;
      Book bk = null;
      int isbn=0;
      String title="";
      String yn= "";
      ArrayList al = new ArrayList( );
   
      System.out.println("The size of the array list is "+ al.size( ));
do{
      try{
     
         System.out.print("Enter the ISBN: ");
         isbn = sc.nextInt( );
         sc = new Scanner(System.in);
         System.out.print("Enter the Title: ");
         title = sc.nextLine( );
         book = new Book (isbn, title);
         al.add(book);
         sc = new Scanner(System.in);
         System.out.println("another? y/n");
         yn = sc.nextLine( );
           
      }//closes try
      catch(InputMismatchException ime){
         System.out.println("You did not enter a number");
         System.out.println("This program will end now");
      }  
      catch(BookException be){
          System.out.println(be.getMessage( ));
      }
      
     }while((yn.equalsIgnoreCase("Y")));
   
   System.out.println("- - -Printing all books - - -");
      for (int i=0; i<al.size(); i++){
         bk = (Book) al.get(i);
         System.out.println(bk.toString( ));
         System.out.println(al.get(i));
      }
    
   }
}